Please select the most similar patent number from A, B, C and D. Which number is?
The present invention relates to everyday clothing, and particularly relates to underpants and shorts. Provided in the present invention are underpants having a front opening. The underpants comprise a main body formed by means of sewn cloth and are characterized by: a gap is provided along an uppermost waist circumferential portion thereof, in the form of an opening or a breach. The two sides of the gap are each fixed with a fastening member. The fastening member comprises a connection means having a connection function, such as a snap-fit fastener, a button and a buttonhole, a hook, a hook-and-loop fastener, a fabric button, a drawstring buckle, a string, or an elastic band or cloth band. In addition, cloth at the opening or breach location is partially detached from and has a gap with respect to the waistline, and a curved shape is created thereon close to the waistline. When the underpants are worn, the gap exposes the skin to achieve an aesthetic effect. Alternatively, holes can be formed in the cloth without restriction on the location and number of holes.
A: A water-sensitive garment piece, a preparation process therefor, and a smart wearable monitoring garment. The water-sensitive garment piece is prepared using a water-sensitive shape memory polymer, and has a two-way shape memory function. The water-sensitive garment piece shrinks upon contact with water, causing the wearable monitoring garment to become tight, and therefore in a shrunken state when wet and a stretched state when dry. The water-sensitive garment piece thus converts between being tight and loose as the environmental humidity changes. The wearable monitoring garment prepared from the water-sensitive garment piece is used for body physiological signal collection, and prevents bodily discomfort caused by tight wearing for a long time. When a loose fit is required, a user enters a dry environment, and the wearable monitoring garment rapidly changes to a loose state, and when body physiological signal monitoring is required, the user need only spray a wet mist on the fabric or move to produce sweat, so that the fabric shrinks, and the wearable monitoring garment is tight and thereby collects body physiological signals.
B: A down jacket provided with a detachable vest, which relates to the technical field of down jackets, comprising a jacket (1) and a vest (3), wherein the vest (3) is draped on a middle position of the outer side of the jacket (1), first sleeves (107) are sewn on left and right sides of the jacket (1), and the tail ends of the inner walls of the first sleeves (107) is attached to first adhesive patch rings (110); the tail ends of the outer walls of the first sleeves (107) are fixed to elastic bands (108), and the tail ends of the inner walls of the elastic bands (108) are fixed to protrusions (109); second sleeves (2) are detachably connected below the two first sleeves (107), and the the ends of the second sleeves (2) close to the first sleeves (107) are fixed to second adhesive patch rings (203); round groove blocks (202) are fixed above the outer side of the second sleeves (2), and the tail ends of the second sleeves (2) are provided with cuffs (201); and first velcro tape (102) is sewn on left and right sides of the upper part of the jacket (1), and a second velcro tape (103) is sewn below the outer surface of the jacket (1). The sleeves may be removed separately, which is convenient for separate cleaning, avoids the trouble of cleaning the entire piece, and improves the cleaning efficiency.
C: Provided is a cutting processing method for a seam allowance of an overcoat. The method comprises the following steps: (1) cutting: flattening fabric in a yarn direction and then cutting same according to a structural board, and adjusting the magnitude of a slope; (2) drawing, and sticking a panel strip: laying the structural board on a front piece of the fabric, drawing a net line according to the structural board, and sticking, to the net line, a 6-degree bias or a 12-degree bias panel strip for fixation; (3) sewing: lifting the front piece and a facing to check that the shapes and sizes of the two pieces are complementary, and then sewing a seam allowance according to the position of the net line on the front piece; and (4) ironing. The method makes a breakthrough in the current conventional practices in terms of pattern-making. A seam allowance slopes according to the texture of the fabric, such that after being sewed together with the facing, the seam allowance can match the fabric slackness of a cut piece, wherein the slope is 0.5-2.5 degrees. During sewing, the 6-degree bias or the 12-degree bias panel strip is stuck for fixation, such that the seam allowance is slack after being sewed, and the completed seam allowance is both straight and beautiful. At the same time, a new employee can also complete a sewing operation, thereby greatly improving the production efficiency and reducing the problem of a low sewing rate.
D: An underwear improvement structure, comprising: a front piece (11) and rear piece (12) forming an underwear body (10). An entry opening (13) for wearing is provided at a top portion of the underwear body (1). Hose-shaped exit openings (15) are respectively provided at two sides of a bottom portion of the underwear body (1). The edge of the entry opening (13) is provided with an elastic band (14). The front piece (11) is provided with an upper curved bag (16) protruding slightly forward at a position corresponding to male genitalia. A lower pocket (17) with a cleft shape is connected to the bottom of a lower edge of the upper curved bag (16). An upper elastic band surface (18), with V-shaped elastic knitting, extends from a bottom edge of the upper curved bag (16) to a bottom edge of the elastic band (14) at the entry opening (13) at the top portion of the front piece (11), thereby forming a suspended connection. A lower elastic band surface (19), with U-shaped elastic knitting and a larger curvature, extends from two sides of the lower pocket (17) to connecting side edges of the rear piece (12).When the underwear is properly worn, the underwear completely accommodates and covers an external, visible portion of the genitalia, and provides an elastic support by means of the curve-shaped upper and lower elastic surfaces (18,19) on two sides of the upper curved bag (16) and lower pocket (17).When moving, the underwear provides adequate massaging support to a relevant organ or a proximal acupoint, allowing a male user to receive complete form-fitting comfort and achieve the usage performance goals of healthiness, practicality, and safety.
Answer: D