Dickies Men's Kevlar Reinforced Steel Toe Crew Socks 82% Polyester, 10% Nylon, 8% Spandex Machine Wash DuPont Kevlar fiber reinforcement throughout steel toe and heel delivers abrasion resistance for long lasting durability and socks that won't wear out Arch compression hugs feet and keeps socks in place for greater comfort Achilles heel protective pad provides cushioning comfort against high boot Power cushion for all-day impact stress relief Reciprocated heel and toe for superior fit and comfort