The FXD WS-2 Short Shorts are made from 7.3 ounce (248 GSM) soft touch cotton twill with DURA500 advanced nylon and polyurethane canvas abrasion panels. DURA500 is a 500 denier nylon oxford treated with Polyurethane for high tensile strength and performance durability. DURA500 provides long-lasting enhanced tear and abrasion resistance.