These Classic Cotton Trunks are made of a comfortable cotton blend, which will keep you cool and fuss-free all day. Developed and recommended by Danish ironman and entrepreneur Anders Hofman, these trunks have a soft, tag-free elastic waistband that prevents any irritations and ensures a nice and smooth feeling on your skin. Washing instructions: Please wash with similar colors, not above 40°C or 105°F. Do not iron. Do not tumble dry.