GYM Athletic Mens army green old school jock strap jockstraps underwear Size M (fit waist size 32-34 inches);Size L (fit waist size 36-38 inches); Size XL, fit waist 40-42 inches. 3″ waistband Athletic supporters are designed to support, protect, fight fatigue and reduce risk of strains. Pouch: 55% nylon, 25% rubber, 20% cotton. Waistband: 70% polyester, 30% rubber. Leg elastic: 70% polyester, 30% rubber.