Polo Ralph Lauren Boys 3 Pack Big Polo Player Ped Socks Flat-knit with ribbed cuffs for an excellent fit. Our signature Big Pony is screen-printed at the foot. 71% cotton. 27% polyester. 2% spandex. Machine washable. Imported. Sizes 4-7 fit sizes 10-13, sizes 8-9 fit shoe sizes 13-3, sizes 9-11 fit shoe sizes 4-10.