Bodyflex Mesh Jock Strap from Jack Adams Underwear. With an ergonomic, body conscious fit, it is made of an extremely soft four way stretch mesh material that wicks away moisture while showing off a provocative hint of skin. This sporty jock is designed to move with the body and also features a fly front for easy access. Made from 95% Polyester and 5% Lycra. Medium waist 30 inches to 32 inches.