Clever Sport Microfiber Boxer Machine wash warm, only non chlorine bleach when needed. Tumble dry low, cool iron if needed. Wash dark colors separately. 93% Nylon / 7% Spandex Machine wash warm, only non chlorine bleach when needed. Tumble dry low, cool iron if needed. Wash dark colors separately. Small Waist: 27-29", Medium Waist: 30-32", Large Waist: 33-35", Extra Large Waist: 36-38"