From Nike, the Kids' Cushioned Crew Sock 6 Pack features: They’re powered by Dri-FIT to help you stay dry so you can go all out from short walks to big adventures and everything in between. Dri-FIT technology helps keep you dry and comfortable. Fabric is soft and lightweight. Arch band provides a supportive feel Ribbed cuffs help keep your socks in place. 66-69% cotton/26-29% polyester/4% polyurethane/1% nylon Material percentages may vary. Check label for actual content Machine wash Imported. Sizing Notes: S:3-5, M: 5-7