PEDS Little Boys' Growing Half Cushion Crew Socks (Pack of 4) 80% Cotton, 14% Nylon, 3% Spandex, 3% Polyester Imported Machine Wash 2 sizes in 1 sock Crew cut Durable socks for all your little guy's activities 4 pair pack Satisfaction guaranteeif you are not completely satisfied with your PEDS product, simply return them to us for replacement