Comfort is just a step away with these easy on/off slippers! Temperature regulating designs keep you cool or cozy no matter the weather; and when its time for a refresh, these machine washable slippers are a breeze to clean. Knit, 100% polyester. Upper Flannel, 100% polyester. Lining TPR + Fabric Outsole Velour, 100% polyester. Footbed Slipper available in sizes Small (Women's 5-6), Medium (Women's 7-8), Large (Women's 9-10), X-Large (Women's 11-12)