Dickies Men's 2 Pack Steel Toe Crew Socks 76% Acrylic, 11% Cotton, 9% Nylon, 3% Polyester, 1% Spandex Machine wash wam with like colors,only non-chlorine bleach when needed,tumble dry medium, do not iron. Extended reinforcement through toe cap for steel toe protection Reciprocated heel and toe for superior fit and comfort