Clever River Boxer Machine wash cool. Do not bleach. Tumble dry low or lay flat to dry. Do not iron. 48% Nylon / 48% Polyester / 4% Spandex Machine wash cool. Do not bleach. Tumble dry low or lay flat to dry. Do not iron. Small Waist: 27-29", Medium Waist: 30-32", Large Waist: 33-35", Extra Large Waist: 36-38"