Clever Tilos Swim Brief Machine wash cool, only non chlorine bleach when needed. Lay flat to dry. Wash dark colors separately. 84% Nylon / 16% Spandex Machine wash cool, only non chlorine bleach when needed. Lay flat to dry. Wash dark colors separately. Small Waist: 27-29", Medium Waist: 30-32", Large Waist: 33-35", Extra Large Waist: 36-38"