Peds Coolmax Low Cut Sock with Footbed Cushioning, 9 Pairs 35% Coolmax Polyester, 35% Cotton, 19% Polyester, 8% Nylon, 3% Lycra Spandex Imported Machine Wash Coolmax fabric moisture management technology helps keep feet cool and dry Uniquely designed massaging bar cushion channels make these socks comfortable without the added bulk Lycra fiber offers the ultimate in comfort and fit Satisfaction guarantee-if you are not completely satisfied with your PEDS product, simply return them to us for replacement