ErgoWear Max Premium Boxer Machine wash warm, only non chlorine bleach when needed. Lay flat to dry. Do not tumble dry or dry clean. Wash dark colors separately. 90% Cotton / 10% Spandex Machine wash warm, only non chlorine bleach when needed. Lay flat to dry. Do not tumble dry or dry clean. Wash dark colors separately. Small Waist: 27-29", Medium Waist: 30-32", Large Waist: 33-35", Extra Large Waist: 36-38"