Carhartt Men's Comfort Stretch Steel Toe Socks 56% Wool, 19% Acrylic, 14% Nylon, 8% Polyester, 2% Spandex, 1% Lycra Spandex Pull On closure Machine Wash Super Abrasion-resistant cora last yarn for maximum durability and protection Fast dry technology wicks away sweat so socks stay dry Antimicrobial technology fights the toughest odors Wool blend regulates temperature for comfort Non-binding comfort-stretch top