Jockstrap

A jockstrap or athletic supporter is an undergarment for men. It consists of an elastic band round the waist, a triangle to cover the genitals and two strings from the bottom of the triangle to the waistband that hold the triangle in position without goung through the crotch.

It is primarily intended to support the genitals during athletic activity, and may also be used by ballet dancers who wear very close-fitting ballet tights. Worn on its own, its revealing nature makes it a popular fetish among gay men and some women.