MADE FROM85% Cotton, 10% Polyester, 5% Spandex CARE INSTRUCTIONSMachine wash, cold (30 ℃ / 86 ℉). Do not bleach or iron. To reduce damage and if you're feeling very fancy, line dry. They will last longer if you keep them out of the tumble dryer. Good Luck Sock Active Fit Mens Socks - Batman and Ramen