Patent Publication Number: US-11033115-B2

Title: Comfort layer having repeating pattern of pocketed mini coil springs of different heights

Description:
TECHNICAL FIELD OF THE INVENTION 
     This invention relates to a comfort layer for bedding and seating products. More particularly, this invention relates to a pocketed spring comfort layer for use in seating or bedding products. 
     BACKGROUND OF THE INVENTION 
     Comfort layers are commonly used in seating or bedding products above/below a core, which may or may not include a spring assembly. Such comfort layers may include foam, fiber and gel products. U.S. Pat. No. 8,087,114 discloses a comfort layer made of pocketed springs. Such spring assemblies may be made of strings of individually pocketed coil springs joined together or multiple coil springs joined together by helical lacing wires. 
     Comfort layers comprising mini pocketed coil springs have heretofore been a uniform firmness throughout. The mini pocketed coil springs have all been the same. 
     One desirable feature of known pocketed spring assemblies used as the core of bedding products is posturized support, i.e., one or more sections of the pocketed spring assembly being firmer than another section or other sections of the pocketed spring assembly. Due to the configuration of the human body laying on a bedding or seating product, additional support in a middle or lumbar section of the product may be desirable. Comfort layers are commonly used in seating or bedding products above/below a central core. The central core may or may not include a spring assembly. The central core is most commonly a pocketed or un-pocketed spring core. However, the central core of a bedding or seating product may be made partially or entirely of foam. 
     U.S. Pat. Nos. 9,968,202 and 9,943,173 each disclose a comfort layer made of pocketed mini coil springs configured to overlay a spring core of a bedding or seating product. Such comfort layers commonly have at least one layer of fabric above and at least one layer of fabric below individually pocketed mini coil springs. 
     One drawback to such pocketed spring comfort layers is that a mattress manufacturer may desire to place one or more foam or fiber layers above such a pocketed spring comfort layer so that a user does not detect or feel the pocketed spring comfort layer. In the case of a double-sided bedding or seating product, a mattress manufacturer may place one or more foam or fiber layers above one pocketed spring comfort layer and below another pocketed spring comfort layer on the opposite surface of the central core of the product. 
     It is therefore an objective of this invention to provide a pocketed spring comfort layer adapted to overlay a central core of a seating or bedding product which may eliminate or reduce the need for a mattress manufacturer to place one or more foam or fiber layers above the pocketed spring comfort layer and yet obtain a posturized effect. 
     It is another objective of this invention to provide a pocketed spring comfort layer adapted to overlay a central core of a seating or bedding product which may reduce the number or thickness of foam or fiber layers a mattress manufacturer may elect to place above such a pocketed spring comfort layer, thereby reducing the cost of the finished mattress by the cost of such layers and the associated cost of applying them while still obtaining different firmness in different regions. 
     It is another objective of this invention to provide a pocketed spring comfort layer for a seating or bedding product which has different regions or sections of different firmness. 
     SUMMARY OF THE INVENTION 
     The invention, which accomplishes these objectives, comprises a comfort layer configured to overlay a central core of a seating or bedding product. The comfort layer comprises an assembly or matrix of individually pocketed mini coil springs, each mini coil spring being contained within a fabric pocket. The fabric pocketing material within which the mini coil springs are contained may be any known fabric, including a non-woven polypropylene fabric commonly used in the bedding industry. 
     Any of the embodiments of comfort layer shown or described herein may be incorporated into a bedding product, such as a mattress, foundation or pillow. Further, any of the embodiments of comfort layer shown or described herein may be incorporated into a seating product, such as a vehicle seat and/or office or residential furniture, such as a recliner. Alternatively, any of the embodiments of comfort layer shown or described herein may be sold independently as a retail or wholesale item. In such an application, the comfort layer may be added to and/or removed from a bedding or seating product by a customer. Most embodiments of comfort layer are configured to overlay a core of a bedding or seating product such as a pocketed spring core, for example. 
     According to one aspect of the invention, the comfort layer, whether incorporated inside a bedding or seating product or manufactured and sold as a separate product, comprises a matrix of pocketed mini coil springs. Each mini coil spring is contained within a pocket, the pocket having a weld seam at least partially around the pocket joining first and second pieces of fabric to create a pocketed mini coil spring. Each weld seam may be a solid seam or comprise multiple weld segments with gaps between the weld segments. 
     In multiple embodiments, the comfort layer has aligned rows and columns of pocketed mini coil springs. The pocketed mini coil springs have a repeating pattern of at least two different heights within at least one of the rows and columns. In one of these repeating patterns, within at least one of the rows and columns, every other pocketed mini coil spring has a first height and every other pocketed mini coil spring has a second height, the second height being different than the first height. The pocketed mini coil springs with at least one row or column may have different heights due, at least in part to different mini coil springs being inside the pockets of the pocketed mini coil springs. In one embodiment, each of the rows and columns has along its length, pocketed mini coil springs having different heights in a repeating pattern. In one embodiment, along at least one row or column, every other pocketed mini coil spring has a first height and every other pocketed mini coil spring has a second height, the second height being different than the first height. In other words, the comfort layer has pocketed mini coil springs with alternating heights along at least one row or column. 
     In some embodiments, the weld seams are circular and the weld segments are curved. In other embodiments, the weld seams are rectangular and the weld segments straight. In most embodiments, the weld segments and the gaps therebetween are the same size. However, the weld segments may be different sizes, regardless of the shape of the weld seams. 
     The comfort layer, whether incorporated inside a bedding or seating product or manufactured and sold as a separate product, comprises a matrix of mini coil springs, a first piece of fabric on one side of the matrix of mini coil springs and a second piece of fabric on another side of the matrix of mini coil springs. The first and second pieces of fabric are joined with weld seams at least partially around each of the mini coil springs to create individual pockets which contain the mini coil springs. The weld seams may comprise weld segments with gaps between the weld segments or may comprise continuous, uninterrupted welds. The comfort layer has aligned rows and columns of pocketed mini coil springs. The pocketed mini coil springs are arranged in a checkerboard pattern, every other pocketed mini coil spring having a first height and every other pocketed mini coil spring having a second height, the second height being different than the first height. The mini coil springs of the pocketed mini coil springs having the first height may have a different diameter than the mini coil springs of the pocketed mini coil springs having the second height. In one embodiment the first height is greater than the second height. In some embodiments, the mini coil springs of the pocketed mini coil springs having the first height may have a different out-of-pocket height than the mini coil springs of the pocketed mini coil springs having the second height. 
     The comfort layer, whether incorporated inside a bedding or seating product or manufactured and sold as a separate product, comprises mini coil springs, a first piece of fabric on one side of the mini coil springs and a second piece of fabric on another side of the mini coil springs. The first and second pieces of fabric are joined with weld seams at least partially around each of the mini coil springs to create individual pockets which contain the mini coil springs. The weld seams may be continuous welds or comprise weld segments with gaps between the weld segments. The comfort layer has rows and columns of pocketed mini coil springs arranged in a nested configuration. Within at least one of the rows and columns every other pocketed mini coil spring has a first height and every other pocketed mini coil spring has a second height, the second height being different than the first height. The different heights of the pocketed mini coil springs may be due, at least in part, to different mini coil springs being inside the pockets of the pocketed mini coil springs. In some embodiments, the pocketed mini coil springs along at least one of the rows and columns may have a different repeating pattern, such as for example, tall, short, short and then tall, short, short again. In some embodiments, the pocketed mini coil springs along at least one of the rows and columns may have more than two different heights. 
     By changing the gauge of wire, out-of-pocket diameter or out-of-pocket height or any combination thereof of the mini coil springs of the comfort layer, a comfort layer having pocketed mini coil springs of different heights may be constructed. 
     Alternatively, by changing the size of the weld seams containing the mini coil springs of the comfort layer, a comfort layer may be constructed using the same mini coil springs. 
     These and other objects and advantages of this invention will be more readily apparent from the following drawings, in which: 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view, partially broken away, of a bedding product incorporating one of the comfort layers of this invention; 
         FIG. 1A  is a perspective view, partially broken away, of another bedding product incorporating the comfort layer of  FIG. 1 ; 
         FIG. 2  is a perspective view of the comfort layer used in the bedding product of  FIG. 1 ; 
         FIG. 3  is an enlarged top view of the area  3  of  FIG. 2 ; 
         FIG. 3A  is an enlarged top view like  FIG. 3  with different weld seams; 
         FIG. 4  is a cross-sectional view taken along the line  4 - 4  of  FIG. 3 ; 
         FIG. 4A  is a cross-sectional view taken along the line  4 A- 4 A of  FIG. 3A ; 
         FIG. 5A  is a side elevational view of one of the mini coil springs used in the end sections of the comfort layer of  FIG. 2 ; 
         FIG. 5B  is a top view of the mini coil spring of  FIG. 5A ; 
         FIG. 5C  is a cross-sectional view taken along the line  5 C- 5 C of  FIG. 3 ; 
         FIG. 6A  is a side elevational view of one of the mini coil springs used in the middle section of the comfort layer of  FIG. 2 ; 
         FIG. 6B  is a top view of the mini coil spring of  FIG. 6A ; 
         FIG. 6C  is a cross-sectional view taken along the line  6 C- 6 C of  FIG. 3 ; 
         FIG. 7A  is a side elevational view of a mini coil spring which may be used in any tall pocket of any comfort layer shown or described herein; 
         FIG. 7B  is a top view of the mini coil spring of  FIG. 7A ; 
         FIG. 7C  is a cross-sectional view of the mini coil spring of  FIGS. 7A and 7B  shown partially compressed in a tall pocket; 
         FIG. 8A  is a side elevational view of a mini coil spring which may be used in any short pocket of any comfort layer shown or described herein; 
         FIG. 8B  is a top view of the mini coil spring of  FIG. 8A ; 
         FIG. 8C  is a cross-sectional view of the mini coil spring of  FIGS. 8A and 8B  shown partially compressed in a short pocket; 
         FIG. 9A  is a side elevational view of a mini coil spring which may be used in any tall pocket of any comfort layer shown or described herein; 
         FIG. 9B  is a top view of the mini coil spring of  FIG. 9A ; 
         FIG. 9C  is a cross-sectional view of the mini coil spring of  FIGS. 9A and 9B  shown partially compressed in a tall pocket; 
         FIG. 10A  is a side elevational view of a mini coil spring which may be used in any short pocket of any comfort layer shown or described herein; 
         FIG. 10B  is a top view of the mini coil spring of  FIG. 10A ; 
         FIG. 10C  is a cross-sectional view of the mini coil spring of  FIGS. 10A and 10B  shown partially compressed in a short pocket; 
         FIG. 11A  is a perspective view of another comfort layer, the middle section being a tall section and the end sections being short sections; 
         FIG. 11B  is a perspective view of another comfort layer having one tall section and one short section; 
         FIG. 12  is a perspective view of another comfort layer made in accordance with the invention; 
         FIG. 13  is a top view of the area  13  of  FIG. 12 ; 
         FIG. 13A  is a cross-sectional view taken along the line  13 A- 13 A of  FIG. 13 ; 
         FIG. 14  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 15  is a top view of the area  15  of  FIG. 14 ; 
         FIG. 16A  is a side elevational view of a mini coil spring which may be used in any pocket of any comfort layer shown or described herein; 
         FIG. 16B  is a top view of the mini coil spring of  FIG. 16A ; 
         FIG. 16C  is a cross-sectional view taken along the line  16 C- 16 C of  FIG. 15 ; 
         FIG. 17A  is a side elevational view of the mini coil spring of  FIG. 16A ; 
         FIG. 17B  is a top view of the mini coil spring of  FIG. 17A ; 
         FIG. 17C  is a cross-sectional view taken along the line  17 C- 17 C of  FIG. 15 ; 
         FIG. 18A  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 18B  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 18C  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 18D  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 19  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 19A  is an enlarged top view of the area  19 A of  FIG. 19 ; 
         FIG. 19B  is a cross-sectional view taken along the line  19 B- 19 B of  FIG. 19A ; 
         FIG. 20  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 20A  is an enlarged top view of the area  20 A of  FIG. 20 ; 
         FIG. 20B  is a cross-sectional view taken along the line  20 B- 20 B of  FIG. 20A ; 
         FIG. 21  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 21A  is an enlarged top view of the area  21 A of  FIG. 21 ; 
         FIG. 21B  is a cross-sectional view taken along the line  21 B- 21 B of  FIG. 21A ; 
         FIG. 22  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 22A  is an enlarged top view of the area  22 A of  FIG. 22 ; and 
         FIG. 22B  is a cross-sectional view taken along the line  22 B- 22 B of  FIG. 22A . 
         FIG. 23  is a perspective view of another comfort layer made in accordance with the invention which may be used in any bedding or seating product; 
         FIG. 23A  is an enlarged top view of the area  23 A of  FIG. 23 ; and 
         FIG. 23B  is a cross-sectional view taken along the line  23 B- 23 B of  FIG. 23A . 
     
    
    
     DETAILED DESCRIPTION OF THE DRAWINGS 
     With reference to  FIG. 1 , there is illustrated a single-sided mattress  10  incorporating one embodiment of comfort layer in accordance with this invention. This mattress  10  comprises a spring core  12  over the top of which there is a conventional cushioning pad  14  which may be partially or entirely made of foam or fiber or gel, etc. The cushioning pad  14  may be covered by a posturized comfort layer  16  constructed in accordance with one embodiment of the invention. A second conventional cushioning pad  14  may be located above the posturized comfort layer  16 . In some applications, one or both cushioning pads  14  may be omitted. This complete assembly may be mounted upon a base  18  and is completely enclosed within an upholstered cover  20 . 
     As shown in  FIG. 1 , mattress  10  has a longitudinal dimension or length L, a transverse dimension or width W and a height H. Although the length L is shown as being greater than the width W, they may be identical. The length, width and height may be any desired distance and are not intended to be limited by the drawings. 
     While several embodiments of comfort layer are illustrated and described as being embodied in a single-sided mattress, any of the comfort layers shown or described herein may be used in a single-sided mattress, double-sided mattress or seating cushion. In the event any such comfort layer is utilized in connection with a double-sided product, then the bottom side of the product&#39;s core may have a comfort layer applied over the bottom side of the core, and either comfort layer may be covered by one or more cushioning pads made of any conventional material. Either the cushioning pad or pads, on top and/or bottom of the core, may be omitted. The novel features of the invention reside in the comfort layer. 
       FIG. 1A  illustrates another mattress  10   a  having the same components as mattress  10  except a pocketed spring core  12   a  rather than a conventional spring core  12  shown in  FIG. 1 . Although spring core  12  is illustrated being made of unpocketed coil springs held together with helical lacing wires, the core of any of the products, such as mattresses shown or described herein, may be made wholly or partially of pocketed coil springs (see  FIG. 1A ), one or more foam pieces (not shown) or any combination thereof. Any of the comfort layers described or shown herein may be used in any single or double-sided bedding or seating product having any conventional core. This document is not intended to limit in any way the core. The core may be any conventional core including, but not limited to, pocketed or conventional spring cores. 
       FIGS. 3 and 4  illustrate the components of one embodiment of posturized comfort layer  16  incorporated into the mattress  10  shown in  FIG. 1 . As best shown in  FIG. 4 , the posturized comfort layer  16  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are made of non-woven polypropylene in one embodiment, but may be made of any known material. The fabric pieces  22 ,  24  are preferably made of the same material, but may be made of different materials. The fabric pieces  22 ,  24  are joined together with rectangular weld seams  30 , each rectangular seam  30  surrounding one of the mini coil springs  26  or  28 . 
     Each rectangular seam  30  comprises multiple straight or linear weld segments  32  with gaps  34  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each straight or linear weld segment  32  of each rectangular seam  30 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  34  between adjacent weld segments  32  of each rectangular seam  30 . The straight or linear weld segments  32  are strategically placed around a mini coil spring  26 ,  28  and create the rectangular seam  30 . The two pieces of fabric  22 ,  24 , in combination with one of the rectangular weld seams  30 , define a pocket  36 ,  38  inside of which is at least one mini coil spring  26 ,  28 , respectively. For purposes of this document, the two pieces of fabric  22 ,  24 , in combination with one of the rectangular weld seams  30  and at least one mini coil spring  26 ,  28  define a pocketed mini coil spring  44 ,  46 , respectively. 
       FIGS. 3A and 4A  illustrate the components of posturized comfort layer  16  shown in  FIGS. 3 and 4 , but with solid rectangular weld seams  31  in place of segmented weld seams  30 . In any of the embodiments described herein or shown, solid or partially solid weld seams may replace segmented weld seams of any shape, including circular weld seams.  FIGS. 3A and 4A  are merely one example. 
     As best shown in  FIGS. 2 and 3 , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48  extending from side-to-side and longitudinally extending columns  50  extending from head-to-foot. See  FIGS. 3 and 4 . 
     During the welding process, the mini coil springs  26 ,  28  may be at least partially compressed before pocket  36 ,  38  is closed and thereafter. If desired, resilient members other than mini coil springs, such as foam members, may be used in this embodiment and any embodiment disclosed or shown herein. Alternatively, resilient members made of resilient material, other than foam which returns to its original configuration after a load is removed from the material, may be used inside the pockets in any embodiment disclosed or shown herein. 
     The size of the straight or linear weld segments  32  of rectangular seams  30  are not intended to be limited by the illustrations; they may be any desired size. Similarly, the size of the illustrated rectangular seams  30 , is not intended to be limiting. The placement of the rectangular seams  30  shown in the drawings is not intended to be limiting either. Any desired arrangement of rectangular seams may be incorporated into any embodiment shown or described herein. 
     The weld segments  32  may assume shapes other than the straight or linear weld segments illustrated. For example, the weld seams  32  may be other shapes, such as triangles or circles or ovals of the desired size and pattern. This holds true for any of the weld seams described herein regardless of whether circular or rectangular and regardless of the comfort layer described herein or shown in this document. 
       FIG. 2  illustrates the posturized comfort layer  16  having a center section  40  and two end sections  42  on opposite sides of the center section  40 . Each of the three sections  40 ,  42  is illustrated being generally rectangular shaped and approximately the same size. However, any one of the sections may be a different size than any other section. For example, the end sections  42  may be a different size than the middle or center section  40 . The drawings are not intended to be limiting. 
     Each of the end sections  42  has identical pocketed mini coil springs  44 . For purposes of this document, each of the end sections  42  will be referred to as a “tall” section, and each of the pocketed mini coil springs  44  will be referred to as a “tall” pocketed mini coil spring. Each tall pocketed mini coil spring  44 , shown in detail in  FIGS. 4 and 5C , comprises a partially compressed mini coil spring  26  and first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 5A , each mini coil spring  26  has an out-of-pocket height H 1  in its relaxed or non-compressed condition. As shown in  FIG. 5B , each mini coil spring  26  has a diameter of D 1  in its relaxed or non-compressed condition. As shown in  FIGS. 4 and 5C , each mini coil spring  26 , when pocketed, creates a tall pocketed mini coil spring  44  having a pocketed height H 3 , less than the out-of-pocket height H 1  of mini coil spring  26 . 
     The center section  40  has identical pocketed mini coil springs  46 . For purposes of this document, the center section  40  will be referred to as a “short” section, and each of the pocketed mini coil springs  46  will be referred to as a “short” pocketed mini coil spring. Each short pocketed mini coil spring  46 , shown in detail in  FIGS. 4 and 6C , comprises a mini coil spring  28  and first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 6A , each mini coil spring  28  has an out-of-pocket height H 2  in its relaxed or non-compressed condition, greater than the out-of-pocket height H 1  of mini coil spring  26  shown in  FIG. 5A . As shown in  FIG. 6B , each mini coil spring  28  has diameter D 2  in its relaxed or non-compressed condition greater than the diameter D 1  of mini coil spring  26  shown in  FIG. 5B . As shown in  FIGS. 4 and 6C , each mini coil spring  28 , when pocketed, creates a short pocketed mini coil spring  46  having a height H 4 , less than the height H 3  of tall pocketed mini coil spring  44  shown in  FIG. 5C  and less than the out-of-pocket height H 2  of mini coil spring  28 . 
     Each of the pocketed mini coil springs of the center section  40  is illustrated being a short pocketed mini coil spring  46 , as described herein and shown in  FIGS. 4 and 6C . Each of the pocketed mini coil springs of each of the end sections  42  is illustrated being a tall pocketed mini coil spring  44 , as described herein and shown in  FIGS. 4 and 5C . As shown in  FIG. 2 , each row  48  of tall pocketed mini coil springs  44  in the end sections  42  is identical. Similarly, each row  48  of short pocketed mini coil springs  46  in the center section  40  is identical. The center section  40  is shorter than the end sections  42  because the rows  48  of short pocketed mini coil springs  46  are shorter than the rows  48  of tall pocketed mini coil springs  44  in the end sections  42 . As best seen in  FIG. 2 , each longitudinally extending column  50  of pocketed mini coil springs  44 ,  46  is identical along the length of the posturized comfort layer  16 . 
     Any dimensions shown or described herein may be any desired dimensions and are not intended to be limited by this document. For example, dimensions H 1 -H 5 , D 1  and D 2  may be any desired dimensions. However, in one preferred embodiment, the out-of-pocket height H 1  of mini coil spring  26  shown in  FIG. 5A  and the out-of-pocket height H 1  of mini coil spring  54  shown in  FIG. 8A  may be approximately 1.25 inches. In the same preferred embodiment, the out-of-pocket height H 2  of mini coil spring  28  shown in  FIG. 5B , the out-of-pocket height H 2  of mini coil spring  52  shown in  FIG. 7A  and the out-of-pocket height H 5  of mini coil springs  60 ,  64  shown in  FIGS. 9A and 10A , respectively, may be approximately 2.0 inches. In the same preferred embodiment, the diameter D 1  of the uncompressed mini coil spring  26  shown in  FIG. 5B  and the mini coil spring  52  shown in  FIG. 7B  may be approximately 1.25 inches. In the same preferred embodiment, the diameter D 2  of the uncompressed mini coil spring  28  shown in  FIG. 66  and the mini coil spring  54  shown in  FIG. 8B  may be approximately 1.75 inches. In most embodiments, the height of the pocketed mini coil springs is less than three inches. 
     According to one aspect of the invention, the mini coil springs within a comfort layer, such as mini coil springs  26 ,  28 , may be made of the same wire. In one embodiment, these mini coil springs  26 ,  28  may be both made of seventeen-gauge wire. However, any of the mini coil springs described herein or shown may be made of any gauge wire. 
       FIGS. 7A and 7B  show an alternative mini coil spring  52  in an out-of-pocket condition which may be at least partially compressed and pocketed to create a tall pocketed mini coil spring  56  shown in  FIG. 7C . Tall pocketed mini coil spring  56  may be incorporated into any of the comfort layers shown or described herein, including posturized comfort layer  16 . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs  56 , shown in  FIG. 7C , may be used in any of the comfort layers shown or described herein, including in each of the end sections  42  of posturized comfort layer  16 . Each tall pocketed mini coil spring  56 , shown in detail in  FIG. 7C , comprises a mini coil spring  52 , shown in a relaxed or non-compressed condition in  FIG. 7A , and first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 7A , each mini coil spring  52  has an out-of-pocket height H 2  in its relaxed or non-compressed condition. As shown in  FIG. 7B , each mini coil spring  52  has diameter of D 1  in its relaxed or non-compressed condition. As shown in  FIG. 7C , each mini coil spring  52 , when pocketed, creates a tall pocketed mini coil spring  56  having a pocketed height H 3 . 
       FIGS. 8A and 8B  show an alternative mini coil spring  54  in an out-of-pocket condition, which may be at least partially compressed and pocketed to create a short pocketed mini coil spring  58  shown in  FIG. 8C . Short pocketed mini coil springs  58  may be incorporated into any of the comfort layers shown or described herein, including posturized comfort layer  16 . In place of short pocketed mini coil springs  46  shown in  FIG. 6C , short pocketed mini coil springs  58  shown in  FIG. 8C  may be used in any of the short sections of any of the posturized comfort layers shown or descried herein, including the center section  40  of posturized comfort layer  16 . Each short pocketed mini coil spring  58 , shown in detail in  FIG. 8C , comprises a mini coil spring  54  partially compressed between first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 8A , each mini coil spring  54  has an out-of-pocket height H 1  in its relaxed or non-compressed condition, less than the out-of-pocket height H 2  of mini coil spring  52  shown in  FIG. 7A . As shown in  FIG. 8B , each mini coil spring  54  has diameter D 2  in its relaxed or non-compressed condition greater than the diameter D 1  of the mini coil spring  52  shown in  FIG. 7A . As shown in  FIG. 8C , each mini coil spring  54 , when at least partially compressed and pocketed, creates a short pocketed mini coil spring  58  having a height H 4 , less than the height H 3  of tall pocketed mini coil spring  56  shown in  FIG. 7C . 
     According to one aspect of the invention, the mini coil springs within a comfort layer, such as mini coil springs  52 ,  54 , may be made of the same wire. In one embodiment, mini coil springs  52 ,  54  may be both made of seventeen-gauge wire. However, mini coil springs  52 ,  54  may be made of any gauge wire, including different gauge wires. 
     In any of the comfort layers shown or described herein, including posturized comfort layer  16 , tall pocketed mini coil springs  44 , like the one shown in  FIG. 5C  and short pocketed mini coil springs  46  like the one shown in  FIG. 6C , may be used together in the same comfort layer. Similarly, the tall pocketed mini coil springs  56 , like the one shown in  FIG. 7C  and short pocketed mini coil springs  58  like the one shown in  FIG. 8C , may be used together in the same comfort layer. 
       FIGS. 9C and 10C  illustrate another set of tall and short pocketed mini coil springs, which may be used together in any of the comfort layers shown or described herein.  FIGS. 9A and 9B  show an alternative mini coil spring  60  in an out-of-pocket condition, which may be partially compressed and pocketed to create a tall pocketed mini coil spring  62 , shown in  FIG. 9C . Tall pocketed mini coil springs  62  may be incorporated into any of the comfort layers shown or described herein, including in any of the tall sections of any of the posturized comfort layers shown or described herein, including the end sections  42  of posturized comfort layer  16 . Each tall pocketed mini coil spring  62 , shown in detail in  FIG. 9C , comprises a mini coil spring  60  and first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 9A , each mini coil spring  60  has an out-of-pocket height H 5  in its relaxed or non-compressed condition. As shown in  FIG. 9B , each mini coil spring  60  has diameter of D 1  in its relaxed or non-compressed condition. As shown in  FIG. 9C , each mini coil spring  60 , when pocketed, creates a tall pocketed mini coil spring  62  having a pocketed height H 3 . 
       FIGS. 10A and 10B  show a mini coil spring  64  in an out-of-pocket condition, which may be partially compressed and pocketed to create a short pocketed mini coil spring  66 , shown in  FIG. 10C . Short pocketed mini coil springs  66  may be incorporated into any of the comfort layers shown or described herein, including in any of the short sections of any of the posturized comfort layers shown or described herein, such as the center section  40  of posturized comfort layer  16 . Each short pocketed mini coil spring  66 , shown in detail in  FIG. 10C , comprises a mini coil spring  64  partially compressed between first and second pieces  22 ,  24  of fabric joined together with a rectangular weld seam  30 . As shown in  FIG. 10A , each mini coil spring  64  has an out-of-pocket height H 5  in its relaxed or non-compressed condition, the same out-of-pocket height as the out-of-pocket height H 5  of mini coil spring  60  shown in  FIG. 9A . As shown in  FIG. 10B , each mini coil spring  64  has diameter D 2  in its relaxed or non-compressed condition, greater than the diameter D 1  of the mini coil spring  60  shown in  FIG. 9B . As shown in  FIG. 10C , each mini coil spring  64 , when partially compressed and pocketed, creates a short pocketed mini coil spring  66  having a height H 4 , less than the height H 3  of tall pocketed mini coil spring  62  shown in  FIG. 9C . 
     According to one aspect of the invention, within a comfort layer, such as mini coil springs  60 ,  62 , may be made of the same wire. In one embodiment, mini coil springs  60 ,  62  may be both made of seventeen-gauge wire. However, mini coil springs  60 ,  62  may be made of any gauge wire, including different gauge wires. 
     In posturized comfort layer  16 , the end sections  42  are firmer than the center section  40  because the pocketed mini coil springs of the end sections  42  are tall pocketed mini coil springs  44  and the pocketed mini coil springs of the center section  40  are short pocketed mini coil springs  46 . Any of the other combinations of short and tall pocketed mini coil springs, such as those shown in  FIGS. 7C and 8C  or  FIGS. 9C and 10C , may be incorporated into posturized comfort layer  16 , as well as any other comfort layer shown or described herein. 
       FIG. 11A  illustrates another posturized comfort layer  16   a  in which the orientation of the pocketed mini coil springs is different than the orientation of the pocketed mini coil springs in posturized comfort layer  16 .  FIG. 11A  illustrates the posturized comfort layer  16   a  having a center section  40   a  and two end sections  42   a  on opposite sides of the center section  40   a . Each of the three sections  40   a ,  42   a  is generally rectangular shaped and approximately the same size. However, any one of the sections may be a different size than any other section. For example, the end sections  42   a  may be a different size than the middle or center section  40   a . The drawings are not intended to be limiting. 
     The center section  40   a  is firmer than the end sections  42   a  because the pocketed mini coil springs of the center section  40   a  are tall pocketed mini coil springs  44  and the pocketed mini coil springs of the end sections  42  are short pocketed mini coil springs  46 . Any of the other combinations of short and tall pocketed mini coil springs, such as those shown in  FIGS. 7C and 8C  or  FIGS. 9C and 10C , may be incorporated into posturized comfort layer  16   a , as well as any other posturized comfort layer shown or described herein. 
     As best shown in  FIG. 11A , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   a  extending from side-to-side and longitudinally extending columns  50   a  extending from head-to-foot. Each of the pocketed mini coil springs of the center section  40   a  is illustrated being a tall mini coil spring  46 , as described herein and shown in  FIGS. 4 and 5C . Each of the pocketed mini coil springs of the end sections  42   a  is illustrated being a short pocketed mini coil spring  46 , as described below and shown in  FIGS. 4 and 6C . As shown in  FIG. 11A , each row  48   a  of short pocketed mini coil springs  46  in the end sections  42   a  is identical. Similarly, each row  48   a  of tall pocketed mini coil springs  44  in the center section  40   a  is identical. The center section  40   a  is taller than the end sections  42   a  because the rows  48   a  of pocketed mini coil springs  44  in the center section  40   a  are taller than the rows  48   a  of pocketed mini coil springs  46  in the end sections  42   a . Each longitudinally extending column  50   a  of pocketed mini coil springs  44 ,  46  is identical along the length of the posturized comfort layer  16   a.    
       FIG. 11B  illustrates another posturized comfort layer  16   b .  FIG. 11B  illustrates the posturized comfort layer  16   b  having a firm section  70  and a soft section  72  side-by-side. Each of the firm and soft sections  70 ,  72  is generally rectangular and approximately the same size. However, one of the sections  70 ,  72  may be a different size than the other section. The drawings are not intended to be limiting. 
     In posturized comfort layer  16   b , the firm section  70  is firmer than the soft section  72  because the pocketed mini coil springs of the firm section  70  are tall pocketed mini coil springs  44  and the pocketed mini coil springs of the soft section  72  are short pocketed mini coil springs  46 . Any of the other combinations of short and tall pocketed mini coil springs, such as those shown in  FIGS. 7C and 8C  or  FIGS. 9C  and  10 C, may be incorporated into posturized comfort layer  16   b , as well as any other comfort layer shown or described herein. 
     As best shown in  FIG. 11B , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   b  extending from side-to-side and longitudinally extending columns  50   b  extending from head-to-foot. Each of the pocketed mini coil springs of the firm section  70  is illustrated being a tall mini coil spring  44 , as described herein and shown in  FIGS. 4 and 5C . Each of the pocketed mini coil springs of the soft section  72  is illustrated being a short pocketed mini coil spring  46 , as described below and shown in  FIGS. 4 and 6C . As shown in  FIG. 11B , each column  50   b  of short pocketed mini coil springs  46  in the soft section  72  is identical. Similarly, each column  50   b  of tall pocketed mini coil springs  44  in the firm section  70  is identical, taller than the columns  50  of pocketed mini coil springs  44  in the soft section  72 . Each transversely extending row  48   b  of pocketed mini coil springs  44 ,  46  is identical in the posturized comfort layer  16   b.    
       FIGS. 12, 13 and 13A  illustrate another posturized comfort layer  16   c  having pocketed mini coil springs  44   c ,  46   c  having circular welds, rather than rectangular welds, joining the first and second pieces of fabric  22 ,  24 .  FIG. 12  illustrates the posturized comfort layer  16   c  having a center section  40   c  and two end sections  42   c  on opposite sides of the center section  40   c . Each of the three sections  40   c ,  42   c  is generally rectangular and approximately the same size. However, any one of the sections may be a different size than any other section. For example, the end sections  42   c  may be a different size than the middle or center section  40   c . The drawings are not intended to be limiting. 
     In posturized comfort layer  16   c , the end sections  42   c  are firmer than the center section  40   c  because the pocketed mini coil springs of the end sections  42   c  are tall pocketed mini coil springs  44   c  and the pocketed mini coil springs of the center section  40   c  are short pocketed mini coil springs  46   c . Any of the other combinations of short and tall pocketed mini coil springs, such as those shown in  FIGS. 7C and 8C  or  FIGS. 9C and 10C , may be incorporated into posturized comfort layer  16   c , as well as any other comfort layer shown or described herein. 
     As best shown in  FIG. 12 , the pocketed mini coil springs  44   c ,  46   c  are arranged in a matrix of aligned transversely extending rows  48   c  extending from side-to-side and aligned longitudinally extending columns  50   c  extending from head-to-foot. Each of the pocketed mini coil springs of the center section  40   c  is illustrated being a short mini coil spring  46   c , as described herein and shown in  FIGS. 12, 13 and 13A . Each of the pocketed mini coil springs of the end sections  42   c  is illustrated being a tall pocketed mini coil spring  44   c , as described below and shown in  FIGS. 12, 13 and 13A . As shown in  FIG. 12 , each row  48   c  of tall pocketed mini coil springs  44   c  in each of the end sections  42   c  is identical. Similarly, each row  48   c  of short pocketed mini coil springs  46   c  in the center section  40   c  is identical. The rows  48   c  are shorter than the rows  48  of pocketed mini coil springs  44   c  in the end sections  42   c . Each longitudinally extending column  50   c  of pocketed mini coil springs is identical, having both pocketed mini coil springs  44   c ,  46   c.    
       FIG. 13A  illustrates the components of one embodiment of comfort layer  16   c  shown in  FIGS. 12 and 13 . The comfort layer  16   c  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are joined together with circular weld seams  74 , each circular seam  74  surrounding a mini coil spring  26 ,  28 . Each circular seam  74  comprises multiple arced or curved weld segments  76  with gaps  78  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each arced or curved weld segment  76  of each circular seam  74 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  78  between adjacent weld segments  76  of each circular seam  74 . The curved weld segments  76  are strategically placed around a mini coil spring  26 ,  28  and create the circular seam  74 . The two pieces of fabric  22 ,  24 , in combination with one of the circular weld seams  74 , define a cylindrical-shaped pocket  36   c ,  38   c  inside of which is at least one mini coil spring  26 ,  28 . See  FIGS. 13 and 13A . 
     During the welding process, the mini coil springs  26 ,  28  may be at least partially compressed before pocket  36   c ,  38   c  is closed and thereafter. If desired, resilient members other than mini coil springs, such as foam members, may be used and any embodiment disclosed or shown herein. Alternatively, resilient members made of resilient material, other than foam which returns to its original configuration after a load is removed from the material, may be used inside the pockets in any embodiment disclosed or shown herein. 
     The embodiment of posturized comfort layer  16   c  shown in  FIGS. 12, 13 and 13A  illustrates all the circular weld seams  74  being the same diameter D 3 . The difference in the height of the pocketed mini coil springs  44   c ,  46   c  is due to the different mini coil springs being inside the pockets. 
     Although the drawings show a certain size of the curved weld segments  76  of circular weld seams  74 , the size of the curved weld segments  76  of circular weld seams  74  are not intended to be limited by the illustrations; they may be any desired size. Similarly, although the drawings show the circular weld seams  74  having a certain diameter D 3 , the diameter of the illustrated circular weld seams  74  is not intended to be limiting. 
       FIGS. 14, 15, 16A-16C and 17A-17C  illustrate another posturized comfort layer  16   d  having identical mini coil springs  80  throughout, but circular welds of different diameters D 3  and D 4  joining the first and second pieces of fabric  22 ,  24 .  FIG. 14  illustrates the posturized comfort layer  16   d  having a center section  40   d  and two end sections  42   d  on opposite sides of the center section  40   d . Each of the three sections  40   d ,  42   d  is generally rectangular shaped and approximately the same size. However, any one of the sections may be a different size than any other section. For example, the end sections  42   d  may be a different size than the middle or center section  40   d . The drawings are not intended to be limiting. 
     In posturized comfort layer  16   d , the end sections  42   d  are firmer than the center section  40   d  because the pocketed mini coil springs of the end sections  42   d  are tall pocketed mini coil springs  44   d  and the pocketed mini coil springs of the center section  40   d  are short pocketed mini coil springs  46   d.    
     As best shown in  FIG. 14 , the tall pocketed mini coil springs  44   d  of each end section  42   d  are arranged in a matrix of aligned transversely extending rows  48   d  extending from side-to-side and aligned longitudinally extending columns  50   d  extending from head-to-foot. Likewise, the short pocketed mini coil springs  46   d  of the center section  40   d  are arranged in a matrix of aligned transversely extending rows  49  extending from side-to-side. As best shown in  FIG. 14 , each aligned longitudinally extending column  50   d  extending from head-to-foot is identical and has a group or set of short pocketed mini coil springs  46   d  between groups or sets of tall pocketed mini coil springs  44   d.    
     As shown in  FIG. 14 , each row  48   d  of tall pocketed mini coil springs  44   d  in each of the end sections  42   d  is identical. Similarly, each row  49  of short pocketed mini coil springs  46   d  in the center section  40   d  is identical. The rows  49  have a different height (shorter) than the rows  48   d  of pocketed mini coil springs  44   d  in the end sections  42   d.    
     Each of the pocketed mini coil springs of the center section  40   d  is illustrated being a short pocketed mini coil spring  46   d , as described herein and shown in  FIGS. 16A, 16B and 16C . Each of the pocketed mini coil springs  44   d  of the end sections  42   d  is illustrated being a tall pocketed mini coil spring  44   d , as described below and shown in  FIGS. 17A, 17B and 17C . 
       FIG. 16C  illustrates the components of one of the short pocketed mini coil springs  46   d . The short pocketed mini coil spring  46   d  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a partially compressed mini coil spring  80  therebetween. The fabric pieces  22 ,  24  are joined together with circular weld seams  82 . As best shown in  FIG. 15 , each circular seam  82  has a diameter D 3  and surrounds a partially compressed mini coil spring  80 . As shown in  FIG. 16A , each mini coil spring  80  has an out-of-pocket height H 6  in its relaxed or non-compressed condition. As shown in  FIG. 16B , each mini coil spring  80  has diameter of D 5  in its relaxed or non-compressed condition. 
     As best seen in  FIG. 15 , each small circular seam  82  comprises multiple arced or curved weld segments  84  with gaps  86  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each arced or curved weld segment  84  of each small circular seam  82 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  86  between adjacent weld segments  84  of each small circular seam  82 . The curved weld segments  84  are strategically placed around a mini coil spring  80  and create the small circular seam  82 . The two pieces of fabric  22 ,  24 , in combination with one of the small circular weld seams  82 , define a cylindrical-shaped pocket  38   d  inside of which is at least one partially compressed mini coil spring  80 . See  FIG. 16C . 
       FIG. 17C  illustrates the components of one of the tall pocketed mini coil springs  44   d . The tall pocketed mini coil spring  44   d  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a partially compressed mini coil spring  80  therebetween. The fabric pieces  22 ,  24  are joined together with large circular weld seams  88 . As best shown in  FIG. 15 , each large circular seam  88  has a diameter D 4 , greater than the diameter D 3  of the small circular weld seams  82  of the short pocketed mini coil springs  46   d . Each large circular seam  88  surrounds a partially compressed mini coil spring  80 . As shown in  FIG. 17A , each mini coil spring  80  has an out-of-pocket height H 6  in its relaxed or non-compressed condition. As shown in  FIG. 17B , each mini coil spring  80  has diameter of D 5  in its relaxed or non-compressed condition. 
     As best seen in  FIG. 15 , each circular seam  88  comprises multiple arced or curved weld segments  90  with gaps  92  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each arced or curved weld segment  90  of each circular seam  88 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  92  between adjacent weld segments  90  of each circular seam  88 . The curved weld segments  90  are strategically placed around a mini coil spring  80  and create the circular seam  88 . The two pieces of fabric  22 ,  24 , in combination with one of the circular weld seams  88 , define a cylindrical-shaped pocket  36   d  inside of which is at least one partially compressed mini coil spring  80 . See  FIG. 17C . 
     During the welding process, the mini coil springs  80  may be at least partially compressed before pocket  36   d ,  38   d  is closed and thereafter. If desired, resilient members other than mini coil springs, such as foam members, may be used. Alternatively, resilient members made of resilient material, other than foam which returns to its original configuration after a load is removed from the material, may be used inside the pockets. 
     The embodiment of posturized comfort layer  16   d  shown in  FIGS. 14, 15, 16A-16C and 17A-17C  illustrates small and large circular weld seams  82 ,  88 , respectively, of different diameters. The difference in the height of the pocketed mini coil springs  44   d ,  46   d  in the different sections is due to the different diameters of the circular weld seams, the mini coil springs inside the pockets being identical. 
     Although the drawings show a certain size of the curved weld segments  84 ,  90  of circular weld seams  82 ,  88 , respectively, the size of the curved weld segments  84 ,  90  of circular weld seams  82 ,  88 , respectively, are not intended to be limited by the illustrations; they may be any desired size. Similarly, although the drawings show the circular weld seams  82 ,  88  having a certain diameters D 3 , D 4 , respectively, the diameter of the illustrated circular weld seams  82 ,  88  is not intended to be limiting. 
     Although the posturized comfort layer  16   d  shows a center section  40   d  having a softer feel than the feel of the end sections  42   d  because the circular weld seams  82  of the short pocketed mini coil springs  46   d  have a smaller diameter than the circular weld seams  88  of the tall pocketed mini coil springs  46   d , it is within the scope of the invention that any comfort layer shown or described herein may incorporate different diameter weld seams with the same mini coil springs to create pocketed mini coil springs of different heights and different firmness. For example, a posturized comfort layer like the posturized comfort layer  16   a  shown in  FIG. 11A  or a posturized comfort layer like the posturized comfort layer  16   b  shown in  FIG. 11B  may be created using circular weld seams of different diameters with the same mini coil springs. 
       FIG. 18A  illustrates another posturized comfort layer  16   e  having four tall sections  94  and three short sections  96 , each of the sections  94 ,  96  extending the full length of the posturized comfort layer  16   e . Adjacent tall sections  94  are separated by a longitudinally extending short section  96  of short pocketed mini coil springs  46 . The pocketed mini coil springs of each of the tall sections  94  are tall pocketed mini coil springs  44 , thus resulting in firmer sections than the short sections  96  of the posturized comfort layer  16   e . Each of the tall sections  94  is generally rectangular shaped, comprises multiple columns and is approximately the same size. However, any one of the sections may be a different size than any other section. For example, any of the tall sections  94  may be a different size than any other tall section. 
     Although  FIG. 18A  shows each short section  96  comprising only one longitudinally extending column of short pocketed mini coil springs  46  between adjacent tall sections  94 , one or more short sections  96  may comprise two or more longitudinally extending columns of short pocketed mini coil springs  46  between adjacent tall sections  94 . Similarly, although  FIG. 18A  shows each tall section  94  comprising four columns of tall pocketed mini coil springs  44 , each tall section may comprise any desired number of columns of tall pocketed mini coil springs. Although  FIG. 18A  shows four tall sections  94  and three short sections  96 , such a posturized comfort layer may have any number of tall sections and short sections. The sections may extend from side-to-side rather than from head-to-foot as shown in  FIG. 18A , in which case each section would comprise multiple rows of pocketed mini coil springs of a desired height. The drawings are not intended to be limiting. 
     As best shown in  FIG. 18A , each longitudinally extending column of short pocketed mini coil springs  46  between adjacent tall sections  94  is known in the art as a “spacer” column. One purpose/benefit of the spacer column(s) is the manufacturer of the comfort layer uses the same amount of fabric material along the entire width and length of the comfort layer  16   e  which results in a rectangular comfort layer, within normal manufacturing tolerances. For manufacturing purposes, a comfort layer which is rectangular, within normal manufacturing tolerances, is more desirable than a product which is not so evenly dimensioned. This benefit of the spacer column(s) or row(s) applies to any of the embodiments shown or described herein, including the comfort layers shown in  FIGS. 18A-18D , even if the comfort layer only has one spacer row or column of spacer pocketed springs. This benefit applies regardless of the height and direction and length of the spacer column(s) or row(s). 
     As best shown in  FIG. 18A , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   e  extending from side-to-side and longitudinally extending columns  50   e  extending from head-to-foot. In this embodiment, each of the pocketed mini coil springs along each of the columns is identical. However, the pocketed mini coil springs within the columns of the tall sections are different than the pocketed mini coil springs within the columns of the short sections. Each of the pocketed mini coil springs of each of the tall sections  94  is illustrated being a tall pocketed mini coil spring  44 , as described herein and shown in  FIG. 5C . Each of the pocketed mini coil springs of each short section  96  is illustrated being a short pocketed mini coil spring  46 , as described herein and shown in  FIG. 6C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs, like tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C , may be used in any of the tall sections  94  of posturized comfort layer  16   e . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs, like short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C , may be used in any of the short sections  96  of posturized comfort layer  16   e.    
     Although  FIG. 18A  illustrates the pocketed mini coil springs having rectangular weld seams, circular weld seams may be incorporated into the pocketed mini coil springs in this or any embodiment shown or described herein. 
     Although  FIG. 18A  illustrates the sections extending the full length of the comfort layer longitudinally or from head-to-foot, the sections may extend the full width of the comfort layer transversely or from side-to-side. In such an embodiment, each of the pocketed mini coil springs of each of the rows would identical. The pocketed mini coil springs within the rows of the tall sections would be different than the pocketed mini coil springs within the rows of the short sections. 
       FIG. 18B  illustrates another posturized comfort layer  16   f  having a center section  40   f  and two end sections  42   f  on opposite sides of the center section  40   f . Each of the three sections  40   f ,  42   f  is generally rectangular shaped and approximately the same size. However, any one of the sections may be a different size than any other section. For example, the end sections  42   f  may be a different size than the center section  40   f . The drawings are not intended to be limiting. 
     Each of the end sections  42   f  is illustrated having four tall sections  98 , adjacent tall sections  98  being separated by a longitudinally extending short section  100  of short pocketed mini coil springs  46 . The pocketed mini coil springs of each of the tall sections  98  are tall pocketed mini coil springs  44 , thus resulting in firmer sections than the short sections  100  of each of the end sections  100  of posturized comfort layer  16   f . Each of the tall sections  98  of each end section  42   f  is generally rectangular shaped and approximately the same size. However, any section may be a different size than any other section. For example, any one of the tall sections  98  may be a different size than any other tall section in one or both end sections  42   f.    
     Although  FIG. 18B  shows each short section  100  of each end section  42   f  comprising only one longitudinally extending partial column of short pocketed mini coil springs  46  between adjacent tall sections  98 , one or more short sections  100  may comprise two or more longitudinally extending partial columns of short pocketed mini coil springs  46  between adjacent tall sections  98  in one or both end sections  42   f . As shown in  FIG. 18B , each longitudinally extending partial column(s)  100  of short pocketed mini coil springs  46  between adjacent tall sections  98  is known in the art as a spacer partial column(s) with the benefits described above. Although  FIG. 18B  shows each tall section  98  comprising four partial columns of tall pocketed mini coil springs  44 , each tall section  98  may comprise any desired number of partial columns of tall pocketed mini coil springs. The drawings are not intended to be limiting. 
     As best shown in  FIG. 18B , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   f  extending from side-to-side and longitudinally extending columns  50   f  extending from head-to-foot. Each of the pocketed mini coil springs of each of the end sections  42   f  is illustrated being a tall mini coil spring  44 , as described herein and shown in  FIG. 5C , except for the pocketed mini coil springs  46  of the short sections  100  within each end section  42   f . Each of the pocketed mini coil springs of each short section  100  and is illustrated being a column of short pocketed mini coil springs  46 , as described herein and shown in  FIG. 6C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs, like tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C , may be used in any of the tall sections  94  of posturized comfort layer  16   e . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs, like short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C , may be used in any of the short sections  100  or  40   f  of posturized comfort layer  16   f . As best shown in  FIG. 18B , each transversely extending row  48   f  of each end section  42   f  of pocketed mini coil springs is identical and comprises short and tall pocketed mini coil springs  44 ,  46 . Each transversely extending row  48   f  of center section  40   f  of pocketed mini coil springs is identical and comprises solely short pocketed mini coil springs  46 . 
     Although  FIG. 18B  illustrates the pocketed mini coil springs having rectangular weld seams, circular weld seams may be incorporated into the pocketed mini coil springs in this or any embodiment shown or described herein. Although  FIG. 18B  illustrates only end sections  42   f  having spacer partial columns, it is within the scope of the invention that only center section  40   f  have spacer partial columns and end sections  42   f  lack spacer partial columns. 
       FIG. 18C  illustrates another posturized comfort layer  16   g  having four short sections  102  and three tall sections  104 , each of the sections  102 ,  104  extending the full length of the posturized comfort layer  16   g . Adjacent short sections  102  are separated by a longitudinally extending tall section  104  of tall pocketed mini coil springs  44 . The pocketed mini coil springs of each of the short sections  102  are short pocketed mini coil springs  46 , thus resulting in softer sections than the tall sections of the posturized comfort layer  16   g . Each of the short sections  102  is generally rectangular shaped, comprises multiple columns and is approximately the same size. However, any one of the sections may be a different size than any of the other sections. For example, any one of the short sections  102  may be a different size than any other short section. 
     Although  FIG. 18C  shows each tall section  104  comprising only one longitudinally extending column of tall pocketed mini coil springs  44  between adjacent short sections  102 , one or more tall sections  104  may comprise two or more longitudinally extending columns of tall pocketed mini coil springs  44  between adjacent short sections  102 . As shown in  FIG. 18C , each longitudinally extending column(s) of tall pocketed mini coil springs  44  between adjacent short sections  102  is known in the art as a spacer column(s) with the benefits described herein. Similarly, although  FIG. 18C  shows each short section  102  comprising four columns of short pocketed mini coil springs  46 , each short section may comprise any desired number of columns of short pocketed mini coil springs. Although  FIG. 18C  shows four short sections  102  and three tall sections  104 , such a posturized comfort layer may have any number of tall sections and short sections. The sections may extend from side-to-side rather than from head-to-foot as shown in  FIG. 18C , in which case each section would comprise multiple rows of pocketed mini coil springs of a desired height. The drawings are not intended to be limiting. 
     As best shown in  FIG. 18C , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   g  extending from side-to-side and longitudinally extending columns  50   g  extending from head-to-foot. In this embodiment, each of the pocketed mini coil springs along each of the columns is identical. However, the pocketed mini coil springs within the columns of the tall sections are different than the pocketed mini coil springs within the columns of the short sections. Each of the pocketed mini coil springs of each of the short sections  102  is illustrated being a short mini coil spring  46 , as described herein and shown in  FIG. 6C . Each of the pocketed mini coil springs of each tall section  104  is illustrated being a column of tall pocketed mini coil springs  44 , as described herein and shown in  FIG. 5C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs, like tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C , may be used in any of the tall sections  104  of posturized comfort layer  16   g . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs, like short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C , may be used in any of the short sections  102  of posturized comfort layer  16   g.    
     Although  FIG. 18C  illustrates the pocketed mini coil springs having rectangular weld seams, circular weld seams may be incorporated into the pocketed mini coil springs in this or any embodiment shown or described herein. 
     Although  FIG. 18C  illustrates the sections extending the full length of the comfort layer longitudinally or from head-to-foot, the sections may extend the full width of the comfort layer transversely or from side-to-side. In such an embodiment, each of the pocketed mini coil springs of each of the rows would identical. The pocketed mini coil springs within the rows of the tall sections would be different than the pocketed mini coil springs within the rows of the short sections. 
       FIG. 18D  illustrates another posturized comfort layer  16   h  having a center section  40   h  and two end sections  42   h  on opposite sides of the center section  40   h . Each of the three sections  40   h ,  42   h  is generally rectangular shaped and approximately the same size. However, any one of the sections may be a different size than any of the other sections. For example, the end sections  42   h  may be a different size than the center section  40   h . The drawings are not intended to be limiting. 
     Each of the end sections  42   h  is illustrated having four short sections  106 , adjacent short sections  106  being separated by a longitudinally extending tall section  108  of tall pocketed mini coil springs  44 . The pocketed mini coil springs of each of the tall sections  108  are tall pocketed mini coil springs  44  thus resulting in firmer sections than the short sections  106  of the end sections  42   h  of posturized comfort layer  16   h . Each of the short sections  106  of each end section  42   h  is generally rectangular shaped and approximately the same size. However, any one of the short sections  106  may be a different size than any other short section in one or both end sections  42   h.    
     Although  FIG. 18D  shows each tall section  108  of each end section  42   h  comprising only one longitudinally extending partial column of tall pocketed mini coil springs  44  between adjacent short sections  106 , one or more tall sections  108  may comprise two or more longitudinally extending partial columns of tall pocketed mini coil springs  44  between adjacent short sections  106  in one or both end sections  42   h . As shown in  FIG. 18D , each longitudinally extending partial column(s) of tall pocketed mini coil springs  44  between adjacent short sections  106  is known in the art as a spacer partial column(s) with the benefits described above. Similarly, although  FIG. 18D  shows each short section  106  comprising four partial columns of short pocketed mini coil springs  46 , each short section may comprise any desired number of partial columns of short pocketed mini coil springs. The drawings are not intended to be limiting. 
     As best shown in  FIG. 18D , the pocketed mini coil springs  44 ,  46  are arranged in a matrix of aligned transversely extending rows  48   h  extending from side-to-side and longitudinally extending columns  50   h  extending from head-to-foot. Each of the pocketed mini coil springs of the center section  40   h  is illustrated being a tall mini coil spring  44 , as described herein and shown in  FIG. 5C . Each of the pocketed mini coil springs of each of the end sections  42   h  is illustrated being short mini coil springs  46 , except for the tall pocketed mini coil springs  44  of the tall sections  108  within each end section  42   h . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C  may be used in any of the tall sections  40   h ,  108  of posturized comfort layer  16   h . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C  may be used in any of the short sections  106  of posturized comfort layer  16   h . As best shown in  FIG. 18D , each transversely extending row  48   h  of each end section  42   f  of pocketed mini coil springs is identical and comprises short and tall pocketed mini coil springs  44 ,  46 . Each transversely extending row  48   h  of center section  40   h  of pocketed mini coil springs is identical and comprises solely tall pocketed mini coil springs  44 . 
     Although  FIG. 18D  illustrates the pocketed mini coil springs having rectangular weld seams, circular weld seams may be incorporated into the pocketed mini coil springs in this or any embodiment shown or described herein. Although  FIG. 18D  illustrates only end sections  42   h  having spacer partial columns, it is within the scope of the invention that only center section  40   h  have spacer partial columns and end sections  42   f  lack spacer partial columns. 
       FIGS. 19, 19A and 19B  illustrate another comfort layer  16   i . Comfort layer  16   i  comprises pocketed mini coil springs  44 ,  46  arranged in a matrix of aligned transversely extending rows  48   i  extending from side-to-side and longitudinally extending columns  50   i  extending from head-to-foot. Tall and short pocketed mini coil springs  44 ,  46 , respectively, alternate along each row  48   i  and along each column  50   i . In other words, every other pocketed mini coil spring is a tall pocketed mini coil spring  44  along each row  48   i  and along each column  50   i . Similarly, every other pocketed mini coil spring is a short pocketed mini coil spring  46  along each row  48   i  and along each column  50   i . One result of such an arrangement is a comfort layer having a uniform firmness or feel across the full width and full length of the comfort layer. In the industry, this configuration is known as a “checkerboard” pattern. 
     Each of the tall pocketed mini coil springs  44  is as described herein and shown in  FIG. 5C . Each of the short pocketed mini coil springs  46  is as described herein and shown in  FIG. 6C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C  may be used in comfort layer  16   i . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C  may be used in comfort layer  16   i . Regardless of which tall and short pocketed mini coil springs are used, the diameter of the mini coil springs of the tall pocketed mini coil springs is less than the diameter of the mini coil springs of the short pocketed mini coil springs. Similarly, regardless of which tall and short pocketed mini coil springs are used, the pocketed height of the tall pocketed mini coil springs is greater than the pocketed height of the short pocketed mini coil springs. 
       FIG. 19B  illustrates the components of comfort layer  16   i  shown in  FIGS. 19 and 19A . The comfort layer  16   i  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are joined together with rectangular weld seams  30 , each rectangular weld seam  30  surrounding one of the mini coil springs  26  or  28 . Each rectangular weld seam  30  comprises multiple straight or linear weld segments  32  with gaps  34  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each straight or linear weld segment  32  of each rectangular seam  30 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  34  between adjacent weld segments  32  of each rectangular seam  30 . The straight or linear weld segments  32  are strategically placed around a mini coil spring  26 ,  28  and create the rectangular seam  30 . The two pieces of fabric  22 ,  24 , in combination with one of the rectangular weld seams  30 , define a pocket  36 ,  38  inside of which is at least one mini coil spring  26 ,  28 , respectively. See  FIGS. 19A and 19B . 
       FIGS. 20, 20A and 20B  illustrate another comfort layer  16   j  having pocketed mini coil springs  44   c ,  46   c  with circular welds, rather than rectangular welds, joining the first and second pieces of fabric  22 ,  24 . Comfort layer  16   j  comprises pocketed mini coil springs  44   c ,  46   c  arranged in a matrix of aligned transversely extending rows  48   j  extending from side-to-side and longitudinally extending columns  50   j  extending from head-to-foot. Tall and short pocketed mini coil springs  44   c ,  46   c , respectively, alternate along each row  48   i  and along each column  50   i . In other words, every other pocketed mini coil spring is a tall pocketed mini coil spring  44  along each row  48   j  and along each column  50   j . Similarly, every other pocketed mini coil spring is a short pocketed mini coil spring  46  along each row  48   j  and along each column  50   j . One result of such an arrangement is a comfort layer having a uniform firmness or feel across the full width and full length of the comfort layer. In the industry, this configuration is known as a “checkerboard” pattern. 
     Each of the tall pocketed mini coil springs  44   c  is as described herein and shown in  FIG. 13A . Each of the short pocketed mini coil springs  46   c  is as described herein and shown in  FIG. 13A . In place of tall pocketed mini coil springs  44   c , tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C  may be used in comfort layer  16   j . Similarly, in place of short pocketed mini coil springs  46   c , short pocketed mini coil springs, like short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C , may be used in comfort layer  16   i . Regardless of which tall and short pocketed mini coil springs are used, the diameter of the mini coil springs of the tall pocketed mini coil springs is less than the diameter of the mini coil springs of the short pocketed mini coil springs. Similarly, regardless of which tall and short pocketed mini coil springs are used, the pocketed height of the tall pocketed mini coil springs is greater than the pocketed height of the short pocketed mini coil springs. 
       FIG. 20B  illustrates the components of comfort layer  16   j  shown in  FIGS. 20, 20A and 20B . The comfort layer  16   j  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are joined together with large circular weld seams  74 , each circular weld seam  74  surrounding a mini coil spring  26 ,  28 . Each circular weld seam  74  comprises multiple arced or curved weld segments  76  with gaps  78  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each arced or curved weld segment  76  of each circular weld seam  74 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  78  between adjacent weld segments  76  of each circular seam  74 . The curved weld segments  76  are strategically placed around a mini coil spring  26 ,  28  and create the circular seam  74 . The two pieces of fabric  22 ,  24 , in combination with one of the circular weld seams  74 , define a cylindrical-shaped pocket  36 ,  38  inside of which is at least one mini coil spring  26 ,  28 , respectively. See  FIGS. 20A and 20B . 
     The embodiment of comfort layer  16   j  shown in  FIGS. 20, 20A and 20B  illustrates all the circular weld seams  74  being the same diameter. The difference in the height of the pocketed mini coil springs  44 ,  46  is due to the different mini coil springs  26 ,  28  being inside the pockets  36 ,  38 , respectively. As stated herein, within the scope of the invention, the mini coil springs within a comfort layer having a checkerboard arrangement may be identical, but the diameter of the circular weld seams different to create pockets of different heights. 
     Although the drawings show a certain size of the curved weld segments  76  of circular weld seams  74 , the size of the curved weld segments  76  of circular weld seams  74  are not intended to be limited by the illustrations; they may be any desired size. Similarly, although the drawings show the circular weld seams  74  having a certain diameter, the diameter of the illustrated circular weld seams  74  is not intended to be limiting. 
       FIGS. 21, 21A and 21B  illustrate another comfort layer  16   k  having the same pocketed mini coil springs  44   c ,  46   c  as the comfort layer  16   j  shown in  FIGS. 20, 20A and 20B  with circular welds joining the first and second pieces of fabric  22 ,  24 . The components of comfort layer  16   k  are the same as the components of comfort layer  16   j . However, the orientation of the pocketed mini coil springs  44   c ,  46   c  in comfort layer  16   k  is different than the orientation of the pocketed mini coil springs  44   c ,  46   c  in comfort layer  16   j.    
     Comfort layer  16   k  comprises pocketed mini coil springs  44   c ,  46   c  arranged in a matrix of aligned transversely extending rows  48   k  extending from side-to-side and longitudinally extending columns  50   k  extending from head-to-foot. Tall and short pocketed mini coil springs  44   c ,  46   c , respectively, alternate along each row  48   k  and along each column  50   k . In other words, every other pocketed mini coil spring is a tall pocketed mini coil spring  44  along each row  48   k  and along each column  50   k . Similarly, every other pocketed mini coil spring is a short pocketed mini coil spring  46   c  along each row  48   k  and along each column  50   k . The result of such an arrangement is a comfort layer having a uniform firmness or feel across the full width and full length of the comfort layer. As best illustrated in  FIG. 21A , the pocketed mini coil springs of one column are offset from, rather than aligned with, the pocketed mini coil springs of the adjacent columns, which is a different configuration than the checkerboard configuration shown in comfort layer  16   j  illustrated in  FIGS. 20, 20A and 20B . This configuration of pocketed mini coil springs in known in the industry as a nested configuration. 
     Each of the tall pocketed mini coil springs  44   c  is as described herein and shown in  FIG. 13A . Each of the short pocketed mini coil springs  46   c  is as described herein and shown in  FIG. 13A . In place of tall pocketed mini coil springs  44   c , tall pocketed mini coil springs, like tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C , may be used in comfort layer  16   k . Similarly, in place of short pocketed mini coil springs  46   c , short pocketed mini coil springs like short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C  may be used in comfort layer  16   k . Regardless of which tall and short pocketed mini coil springs are used, the diameter of the mini coil springs of the tall pocketed mini coil springs is less than the diameter of the mini coil springs of the short pocketed mini coil springs. Similarly, regardless of which tall and short pocketed mini coil springs are used, the pocketed height of the tall pocketed mini coil springs is greater than the pocketed height of the short pocketed mini coil springs. 
     The embodiment of comfort layer  16   j  shown in  FIGS. 20, 20A and 20B  illustrates all the circular weld seams  74  being the same diameter. The difference in the height of the pocketed mini coil springs  44 ,  46  is due to the different mini coil springs  26 ,  28  being inside the pockets  36 ,  38 , respectively. It is within the scope of the invention that the mini coil springs within comfort layer  16   j  shown in  FIGS. 21, 21A and 21B  be identical, but the diameter of the circular weld seams of pocketed mini coil springs  44   c ,  46   c  within comfort layer  16   j  be different to create pocketed mini coil springs of different heights. 
       FIGS. 22, 22A and 22B  illustrate another comfort layer  16   l . Comfort layer  16   l  comprises pocketed mini coil springs  44 ,  46  arranged in a matrix of aligned transversely extending rows  48   l  extending from side-to-side and longitudinally extending columns  50   l  extending from head-to-foot. Tall and short pocketed mini coil springs  44 ,  46 , respectively, extend in a repeating pattern along each row  48   l  and along each column  50   l . In the illustrated embodiment, every third pocketed mini coil spring is a short pocketed mini coil spring  46  along each row  48   l  and along each column  50   l . Similarly, between a pair of adjacent short pocketed mini coil springs  46  are two tall pocketed mini coil springs  46  along each row  48   l  and along each column  50   l . One result of such an arrangement is a comfort layer having a uniform firmness or feel across the full width and full length of the comfort layer. Although one repeating pattern is illustrated, other repeating patterns are within the scope of the invention regardless of whether along one or more columns or one or more rows. For example, a repeating pattern of tall, tall, short, short may extend along each column or row. This example is merely one of many examples. 
     Each of the tall pocketed mini coil springs  44  is as described herein and shown in  FIG. 5C . Each of the short pocketed mini coil springs  46  is as described herein and shown in  FIG. 6C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in  FIG. 9C  may be used in comfort layer  16   l . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C  may be used in comfort layer  16   l . Regardless of which tall and short pocketed mini coil springs are used, the diameter of the mini coil springs of the tall pocketed mini coil springs is less than the diameter of the mini coil springs of the short pocketed mini coil springs. Similarly, regardless of which tall and short pocketed mini coil springs are used, the pocketed height of the tall pocketed mini coil springs is greater than the pocketed height of the short pocketed mini coil springs. 
       FIG. 22B  illustrates the components of comfort layer  16   l  shown in  FIGS. 22 and 22A . The comfort layer  16   l  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are joined together with rectangular weld seams  30 , each rectangular weld seam  30  surrounding one of the mini coil springs  26  or  28 . Each rectangular weld seam  30  comprises multiple straight or linear weld segments  32  with gaps  34  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each straight or linear weld segment  32  of each rectangular seam  30 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  34  between adjacent weld segments  32  of each rectangular seam  30 . The straight or linear weld segments  32  are strategically placed around a mini coil spring  26 ,  28  and create the rectangular seam  30 . The two pieces of fabric  22 ,  24 , in combination with one of the rectangular weld seams  30 , define a pocket  36 ,  38  inside of which is at least one mini coil spring  26 ,  28 , respectively. See  FIGS. 22A and 22B . Although not shown, comfort layer  16   l  may be made with circular welds, either continuous or segmented or any combination thereof. This is true for any of the comfort layers shown or described herein. 
       FIGS. 23, 23A and 23B  illustrate another comfort layer  16   m . Comfort layer  16   m  comprises pocketed mini coil springs  44 ,  46  arranged in a matrix of aligned transversely extending rows  48   m  extending from side-to-side and longitudinally extending columns  50   m  extending from head-to-foot. Each of the transversely extending rows  48   m  extending from side-to-side has pocketed mini coil springs of the same height along the row  48   m . In the illustrated embodiment, each third row  48   m  of pocketed mini coil springs comprises short pocketed mini coil springs  46 . 
     As shown in  FIG. 23 , along each column  50   m , tall, medium and short pocketed mini coil springs  44 ,  45 ,  46 , respectively, extend in a repeating pattern. In the illustrated embodiment, every third pocketed mini coil spring is a short pocketed mini coil spring  46 , every third pocketed mini coil spring is a medium pocketed mini coil spring  45  and every third pocketed mini coil spring is a tall pocketed mini coil spring  44  along each column  50   l . The medium pocketed mini coil spring  45  has a pocketed height greater than the pocketed height of the short pocketed mini coil spring  46  and less than the pocketed height of the tall pocketed mini coil spring  44 . One result of such an arrangement is a comfort layer having a uniform firmness or feel across the full width and full length of the comfort layer. Although one repeating pattern is illustrated, other repeating patterns are within the scope of the invention regardless of whether along one or more columns or one or more rows. For example, a repeating pattern of tall, tall, medium, medium, short, short may extend along each column or row. This example is merely one of many examples. 
     Each of the tall pocketed mini coil springs  44  is as described herein and shown in  FIG. 5C . Each of the short pocketed mini coil springs  46  is as described herein and shown in  FIG. 6C . In place of tall pocketed mini coil springs  44 , tall pocketed mini coil springs  56  shown in  FIG. 7C  or tall pocketed mini coil springs  62  shown in FIG.  9 C may be used in comfort layer  16   m . Similarly, in place of short pocketed mini coil springs  46 , short pocketed mini coil springs  58  shown in  FIG. 8C  or short pocketed mini coil springs  66  shown in  FIG. 10C  may be used in comfort layer  16   m . Regardless of which tall and short pocketed mini coil springs are used, the diameter of the mini coil springs of the tall pocketed mini coil springs is less than the diameter of the mini coil springs of the short pocketed mini coil springs. Similarly, regardless of which tall and short pocketed mini coil springs are used, the pocketed height of the tall pocketed mini coil springs is greater than the pocketed height of the short pocketed mini coil springs. 
       FIG. 23B  illustrates the components of comfort layer  16   m  shown in  FIGS. 23 and 23A . The comfort layer  16   m  comprises a first or upper piece of fabric  22  and a second or lower piece of fabric  24  with a plurality of mini coil springs  26 ,  28  therebetween. The fabric pieces  22 ,  24  are joined together with rectangular weld seams  30 , each rectangular weld seam  30  surrounding one of the mini coil springs  26  or  28 . Each rectangular weld seam  30  comprises multiple straight or linear weld segments  32  with gaps  34  therebetween. The first and second pieces of fabric  22 ,  24  are joined together along each straight or linear weld segment  32  of each rectangular seam  30 . The first and second pieces of fabric  22 ,  24  are not joined together along each gap  34  between adjacent weld segments  32  of each rectangular seam  30 . The straight or linear weld segments  32  are strategically placed around a mini coil spring  26 ,  28  and create the rectangular seam  30 . The two pieces of fabric  22 ,  24 , in combination with one of the rectangular weld seams  30 , define a pocket  36 ,  38  inside of which is at least one mini coil spring  26 ,  28 , respectively. See  FIGS. 23A and 23B . Although not shown, comfort layer  16   m  may be made with circular welds, either continuous or segmented or any combination thereof. This is true for any of the comfort layers shown or described herein. 
     While we have described several preferred embodiments of this invention, persons skilled in this art will appreciate that other configurations of comfort layers may be utilized in the practice of this invention. Similarly, such persons will appreciate that each pocket may contain any number of coil springs or other type of spring, made of any desired material. Persons skilled in the art may further appreciate that the segments of the weld seams may be stitched, glued or otherwise adhered or bonded. Therefore, we do not intend to be limited except by the scope of the following appended claims.