Growing Socks Boys" Ankle Socks, 4-Pack: * Socks that grow as kids" feet grow * Care: machine wash cold inside out in cold water; tumble dry low; use only non-chlorine bleach when needed * Camo: 73 percent cotton, 13 percent nylon, 7 percent polyester, 4 percent spandex, 3 percent rubber; stripe: 69 percent cotton, 14 percent nylon, 11 percent polyester, 4 percent spandex, 2 percent rubber