Casual or dressy, you can't go wrong with the 3 Pair Pack of Women's Muk Luks Knee High Socks. This sock pack is a multi pack of different marled colored socks. This sock pack 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.