Perfect for any athletic activity, Jack Adams Flex Fit Jock Brief is remarkably comfortable and feels like you have nothing on. Made of micro Spandex fabric that wicks moisture away from the body, it gives you excellent comfort and keeps you dry during your hardest workout. Made from 85% Polyester and 15% Elastane.Jack Adams Flex Fit Jock. Black/Sky Blue. Men size small. Waist 27 inches to 29 inches.