Casual or dressy, you can't go wrong with 3 Pair Pack of Women's Muk Luks over the knee boot socks. This sock pack is a multi pack of different colored textured socks. It is available in one size fits most and should be machine washed on gentle cycle, no bleach, and lay flat to dry. Made in China. Material: 88% polyester microfiber, 11% nylon, 1% spandex.