SockShop Men's 4 Pair Marvel Comics Mix Hulk, Spider-Man, Ironman & Wolverine Socks Sock 1: 66% Cotton 27% Polyamide 6% Polyester 1% Elastane; Sock 2 & 3: 65% Cotton 27% Polyamide 7% Polyester 1% Elastane; Sock 4: 62% Cotton 30% Polyamide 7% Polyester 1% Elastane Imported 4 Pair Pack Standard tops Standard toes Machine washable