Dickies Men's All Season Steel Toe Merino Wool Blend Crew Socks 55% Acrylic, 25% Merino Wool, 17% Nylon, 3% Spandex Imported Machine Wash Extended reinforcement through toe cap for steel toe protection and durability Temperature regulating wool keeps feet comfortable year round Ventilation channels engineered for air circulation and moisture control Arch compression provides added support and stability Heel support keeps sock in place