Underwear (English name: underwear) refers to the clothes worn next to the body, including vests, undershirts, shorts, tube tops, bras and so on. , usually in direct contact with the skin, is one of the indispensable clothes for modern people.

Underwear has the functions of absorbing sweat, shaping, setting off the figure, keeping warm, and not being harmed by pollution from the body, and is sometimes regarded as a sexual feature.