Nightwear, also called "sleepwear", "sleeping suit", "nightclothes", or "nightdress", is clothing designed to be worn while sleeping. The style of nightwear worn may vary with the seasons, with eg. warmer styles being worn in colder conditions. Some styles or materials are selected to be visually appealing or erotic, sometimes in addition to their functional purpose of warmth.
Examples of types of items of nightwear include:
There are several other types of garment that are commonly worn for sleeping – especially cloting otherwise used for physical education, see next section – but these are usually not referred to as nightwear, because they may also be worn during the day and in public. Also, sleeping without any clothing at all is not uncommon.
According to a 2004 U.S. survey, 13% of men wear pajamas or nightgowns for sleeping, whereas 31% wear underwear and another 31% sleep nude. Among women 55% wear pyjamas or nightgowns, which were counted under the same option[1]:
| Who | Nothing/nude | Underwear | Nightgown/Pajamas | Shorts/t-shirt | Sweatshirt/sweatpants | Something else | No op. |
|---|---|---|---|---|---|---|---|
| All | 22 | 16 | 34 | 23 | 1 | 2 | 1 |
| Men | 31 | 31 | 13 | 21 | 1 | 3 | 1 |
| Women | 14 | 2 | 55 | 25 | 2 | 1 | 1 |
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