The Stride Rite Alyssa is a 6-pack of athletic no-show socks with ventilated tops and arch support keeps her feet feeling comfortable and looking cute. The cotton-rich socks are durable and hold their shape, even after she wears them non-stop. Machine wash cold with like colors. Only non-chlorine bleach when needed. Tumble dry. Materials: Cotton, Polyester, Nylon, Spandex. These are sold in sock sizes and not shoe sizes.