Blanket sleeper
The blanket sleeper (also known by many other synonyms and trade names) is a type of especially warm sleeper or footie pajama worn primarily during the winter in the United States and Canada. The garment is worn especially by young children. Typically, but not always, the blanket sleeper consists of a loose-fitting, one-piece garment of blanket-like material, usually fleece, enclosing the entire body except for the head and hands. It represents an intermediate step between regular pajamas or babygrow, and bag-like coverings for infants such as buntings or infant sleeping bags (Terminology and Variations  sections below). Like bag-like coverings, the blanket sleeper is designed to be sufficiently warm as to make regular blankets or other bed covers unnecessary, even in colder weather. Unlike such coverings, the blanket sleeper has bifurcated legs to allow unhindered walking (or crawling). While no single feature is universal (see Terminology), distinguishing a blanket sleeper from regular pajamas usually include: Although any sleeping garment with some or all of these characteristics could be called a "blanket sleeper", the term is most commonly applied to a range of styles that deviate relatively little from the same basic design. (The features  of this design are described in the "Features" section, below). Features. Features of the typical blanket sleeper often include: Although primarily worn by the young, blanket sleepers are also worn (in decreasing order of frequency) by school-age children, teens, and even adults. (See "Sizes, gender differences, and availability", below). Although footed, one-piece garments in a variety of fabrics and styles are used in many countries as infant sleepwear, the specific range of styles with which the term "blanket sleeper" is usually associated, the term itself, though children older than infancy wearing footed, one-piece sleeping garments is concentrated  in the Western world. Design considerations. Blanket sleepers are usually intended as practical garments, worn mostly by younger children and primarily in the home. Style and fashion thus tend not to be important in its design, and the basic design of the typical blanket sleeper has changed little over the years. The sleeper serves mainly to keep the wearer warm at night, even in the absence of blankets and bed covers. The sleeper covers the entire body except for the head (except in certain cases where a hood is present) and (in most cases) hands (except in cases where a  sleeper has attached mitts, mostly on infant sizes), where it is snug at the neck and wrists. The use of a zipper closure in place of buttons or snap fasteners also further retains warmth by eliminating drafts. This is especially important for infants, for whom loose blankets may pose a safety hazard (including increasing the risk of SIDS), and possibly for older children, who may still be too young to be relied upon to keep their own sleepwear or bed covers adjusted so as to prevent exposure to the air of bare skin. This is reflected in advertisements by blanket  sleeper manufacturers, which often emphasize that their garments "can't be kicked off", or that "no other covers are needed". The permanently attached feet can also be a beneficial feature for children who are prone to get out of bed in the morning before their parents are awake, and are too young to be relied upon to put on slippers or other footwear to keep their feet warm, as well as for adults who find putting on, and/or wearing socks in bed too bothersome, yet still want their feet covered when getting out of bed in the morning. Blanket sleepers  without feet allow more room for growth and reduce the possibility of slipping. Also, children with larger or smaller feet find a better fit. The blanket sleeper is designed so that it can be worn either by itself as a standalone garment, or as a second layer worn over regular pajamas or other sleepwear. The one-piece design is simple to launder and has no detachable pieces that could be individually misplaced. Yet another potential benefit of the blanket sleeper is that it may help prevent infants from removing or interfering with their diapers during the night. This can also  apply to older children with certain developmental disabilities, such as Angelman syndrome. In particular, parents of Angelman children have been known to take such additional measures as cutting the feet off the sleeper and putting it on backwards, and/or covering the zipper with duct tape. Some specialty locking clothing and other adaptive clothing purveyors offer blanket sleepers, with or without feet, for adults with dementia or other disabilities, for similar reasons. Blanket sleepers may also appeal to cultural mores relating to body modesty. This can, for example, be a consideration for some parents when siblings sleep in the same room  and/or bed. Materials. The range of materials used for mass-produced blanket sleepers for children is severely limited, as a result of stringent U.S. government-imposed flammability requirements. Essentially the only materials used since the 1950s are polyester, acrylic, and modacrylic, with polyester dominating. Unfortunately, this can have a negative impact on comfort for many wearers, particularly children with eczema. A small number of sleepers are made from cotton. Adult-size sleepers, especially those sold by small Internet businesses, can be found in a wider range of materials, including natural fabrics such as cotton flannel. Some web businesses also offer  sleepers in natural fabrics for children, but only outside the U.S. In particular, special "eczema sleepsuits" for children, made of cotton and with built-in mitts designed to prevent scratching, are available from specialty stores in the UK. The fabrics used in most blanket sleepers have a strong tendency to pill. Although this does not adversely affect the garment's functional utility, it has the effect that a used garment can be clearly, visually distinguished from a new one after only a small number of wearings or washings. Decorative features such as appliques or printed designs usually follow juvenile themes , and are designed to make the garments more attractive to the children who wear them. Some adult sleepers can also have appliques on them, but those tend to be from Internet clothing suppliers who offer custom-made sleepers and tend to be of favorite cartoon characters or items that the wearer had in childhood such as teddy bears and animal representatives that they had as pets. Sizes, gender differences, and availability. In the United States and Canada, mass-produced blanket sleepers for both boys and girls up to size 4 (see US standard clothing sizes) are quite common, and can  be found in nearly any department store and online. Sizes larger than 4 are progressively less common, being found in only some stores and online, and usually only seasonally (peaking around October or November). The availability of larger-size sleepers in department stores also varies from year to year. Alternative sources for larger-size, mass-produced sleepers include Internet auction sites, such as eBay, and certain mail order clothing retailers, such as Lands' End. Individual blanket sleepers can be marketed either as a unisex garment, or as a garment intended for one gender. Even in the latter case, however, there  is often no difference stylistically between sleepers marketed specifically for boys, and ones marketed specifically for girls. (The size numbers are also consistent, as, although there are slight differences in the meanings of size numbers between boys and girls in the U.S. standard clothing size system, these are too small to matter in the case of a garment as loose-fitting as a blanket sleeper). Occasionally, however, sleepers marketed for girls may include effeminate decorative features such as lacy frills, and sleepers with screen-printed front panels may feature images of media characters appealing primarily to children of one gender . Also, the ranges of colors available may be different between the genders, in particular pink sleepers are rarely worn by boys due to a cultural association of that color with femininity. Unisex designs and colors offer a more sustainable option allowing the most use over time. In smaller sizes, there is little or no difference in the availability of sleepers for boys and for girls. Sleepers for older boys are somewhat less common than those for older girls. Nevertheless, sleepers for both boys and girls continue to be available in department stores, mainly during the fall and winter seasons, and  year-round on the internet up to size 16–18. Blanket sleepers for adult women used to be relatively uncommon, but since 2010s have increased in popularity and can be found in many department stores, usually in the colder months. Mass-produced blanket sleepers for adult men are more uncommon. However, major home sewing pattern publishers sometimes offer patterns for conventionally styled blanket sleepers in men's sizes, and in the Internet Age a cottage industry has developed, with several websites offering blanket sleepers manufactured on a small scale for men as well as women and children. Also, mass-produced, unisex -styled blanket sleepers marketed for women are sometimes purchased and worn by men, although the difference in the size ranges between men and women means that this option is available only to men of smaller stature. Terminology. The terminology relating to blanket sleepers can be confusing, and inconsistent between different speakers. The terms "sleeper" and "blanket sleeper" are sometimes used interchangeably. Alternatively, a distinction may be made between the lighter-weight (footed, one-piece) "sleepers" worn by infants in warmer weather, and the heavier "blanket" sleepers worn by both infants and older children, primarily in colder weather. (In the loosest  usage, "sleeper" by itself can mean any infant sleeping garment, regardless of form or features). Similarly, some people consider a "blanket" sleeper to be one-piece by definition, whereas a "sleeper" could be made either in one piece, or in two pieces meeting at the waist. When "blanket" is omitted, either the singular form "sleeper" or the plural form "sleepers" may refer to a single garment. When "blanket" is included, however, a single garment is usually referred to using the singular form. The terms "(blanket) sleeper" and "footed pajamas" may be used interchangeably. (This reflects the North American practice of  referring to nearly any sleeping garment as "pajamas", as blanket sleepers bear little resemblance to the jacket and trouser combination, originating in India, that the term "pajamas" originally referred to). Alternatively, "sleeper" may instead be used more narrowly than "footed pajamas", to exclude footed sleeping garments that are lighter-weight and/or two-piece, such as footed "ski" style pajamas. Also, while many people consider built-in feet to be part of the definition of "sleeper", garments otherwise meeting the definition but lacking feet are sometimes marketed as "footless blanket sleepers". The term "grow sleeper" is sometimes used to refer to  a two-piece footed sleeping garment with features designed to compensate for growth in the wearer, such as turn-back cuffs, or a double row of snap fasteners at the waist. Other terms that are used more-or-less interchangeably with "blanket sleeper" include: Also, a number of commercial brand names have been adopted as genericized trademarks. The best known of these is "Dr. Dentons", but others used include "Big Feet", "Trundle Bundle" (common usage on the Southside of Chicago), and "Jama-Blanket". Formerly used, obsolete terms include: In British English, the term with a meaning closest to that of  blanket sleeper is "sleepsuit", but it is also known as a "romper suit". Infants' garments similar to blanket sleepers, but with the bottom portion constructed like a bag, without separate leg enclosures, are usually not considered "sleepers", but rather are referred to by other terms such as "baby sleep bag", "bunting", "sleeping bag", "go go bag", "sleep sack", or "grow bag". Infants' garments similar to blanket sleepers, but designed for use as outerwear rather than sleepwear (and usually featuring hoods and hand covers), are referred to by other terms such as "pram suit", "snowsuit", or "carriage suit". Some such garments  are designed for dual use as both sleepwear and playwear, these are sometimes known as "sleep 'n' play" suits. History. The origins of the blanket sleeper can be traced at least as far back as the late 19th century, to footed, one-piece sleeping garments for children, then known as "night drawers". The first company to mass-produce blanket sleepers was Doctor Denton Sleeping Mills, which started using the term "sleeping garment", for their garments, starting in 1865, and most had buttons instead of zippers (since the zipper wasn't invented until the early 20th century), and trap-doors or  butt-flaps in the back, as early blanket sleepers, quite obviously, took on the same basic design as the traditional union-suit (which may have been where the idea of the sleeper originated; as the children's version of their fathers' union-suits). However, the blanket sleeper first took something closely resembling its present form in the early 1950s, when many of the most recognizable features were first adopted, including the use of synthetic fabrics, slip-resistant soles, toe caps, rib-knit collar and cuffs, zipper closure, snap tab, and applique. The term "blanket sleeper" also first came into common  use at this time, although "sleeper" by itself appeared considerably earlier. Sleepers made before the 1950s were usually made from knitted natural fabrics, either cotton, wool (especially merino), or a mixture of both. Commonly used fabrics included outing flannel and flannelette. (Home-made sleepers were typically made out of fabric pieces cut from actual blankets.) The soles of the feet were usually made from the same material as the rest of the sleeper, though sometimes two layers were used for improved durability. The collar and cuffs were usually hemmed, and the sleeper usually closed with buttons, either in the front  or in the back. Natural fabrics were largely abandoned after the Flammable Fabrics Act of 1953, which imposed strict flammability requirements on children's sleepwear sold in the United States, up to size 14. Flammability requirements were tightened further in the early 1970s, and in 1977 the flame-retarding additive tris was discovered to be carcinogenic, prompting a recall, and leading to the abandonment of such additives and the materials that depended on them for their flame-resistance. The popularity of blanket sleepers for older children got a boost in the 1970s and early 1980s due to the energy crises  of 1973 and 1979. Advertisements from this period often emphasized that thermostats could be set lower at night when children slept in blanket sleepers. Variations. Blanket sleepers sometimes depart from the standard design by incorporating unusual or uncommon features. An incomplete list of these follows.