A man's nightshirt
A man's pajamas

Nightwear – also called sleepwear, or nightclothes – is clothing designed to be worn while sleeping. The style of nightwear worn may vary with the seasons, with warmer styles being worn in colder conditions and vice versa. Some styles or materials are selected to be visually appealing or erotic in addition to their functional purposes.


Nightwear includes:

Other types of garment commonly worn for sleeping—but not exclusively so— include gym shorts, t-shirts, tank tops, sweatpants, as well as underwear and/or socks (worn without outerwear). Sleeping in the nude is also common, especially in warmer climates.[1]


According to a 2004 United States survey, 13% of men wear pajamas or nightgowns for sleeping, whereas 31% wear underwear and another 31% sleep nude. Among women, 55% wear pajamas or nightgowns, which were counted under the same option:[2]

What worn for sleeping Men (%) Women (%) All (%)
Nothing/nude 31 14 22
Underwear 31 2 16
Nightgown/Pajamas 13 55 34
Shorts/t-shirt 21 25 23
Sweatshirt/sweatpants 1 2 1
Something else 3 1 2
No opinion 1 1 1

A survey by the BBC The Clothes Show Magazine in 1996 revealed the following about sleepwear in the UK:[3]

% Pyjamas Nothing Underwear Nightdress Other
Women 37 17 9 33 4†
Men 6 47 22 - 25†

†Most common response in 'Other' from women was outdoor clothes, from men shorts.

Children's nightwear

On 22 December 2011, the U.S. Consumer Product Safety Commission (CPSC) issued a letter to manufacturers, distributors, importers and retailers reminding the apparel industry of the enforcement policy and their obligations associated with children's sleepwear and loungewear.[4]

The commission's regulations define the term children's sleepwear to include any product of wearing apparel (in sizes 0–14), such as nightgowns, pajamas, or similar or related items, such as robes, intended to be worn primarily for sleeping or activities related to sleeping, except: (1) diapers and underwear; (2) infant garments, sized for a child nine months of age or younger; and (3) tight-fitting garments that meet specific maximum dimensions.

All children's sleepwear and loungewear sold in the US are required to comply with the Flammable Fabrics Act (FFA) using the standards for Flammability of Children's Sleepwear 16 C.F.R. Parts 1615 and 1616. Moreover, they have to comply with the Consumer Product Safety Improvement Act of 2008 (CPSIA) requirements including tracking labels, a certificate of compliance, meeting requirements for lead content and surface coatings, and meeting requirements for phthalates.


  1. ^ "American Sex Survey" (PDF). ABC News. 2004. p. 26. Retrieved 2009-09-04. Short Analysis here
  2. ^ "American Sex Survey" (PDF). ABC News. 2004. p. 26. Retrieved 2009-09-04. Short Analysis here
  3. ^ "Sleepwear Survey". The Clothes Show Magazine. BBC Magazines. May 1996.
  4. ^ "Sleepwear Policy and Loungewear Position Letter" (PDF). US CPSC. Archived from the original (PDF) on 2013-01-08. Retrieved 2012-09-24.