Ruya Ballet Slipper Non-Skid Slipper Socks By Foot Size 4-9 Material: Polyester Designed to provide stability in yoga, Pilates or barre class as well as a house sock with its non slip custom design Made to absorb sweat as well as allow breathability to keep you dry and comfortable during your workout and/or daily use Non-skid bottoms to prevent slipping and sliding One Size Fits Most (Women's Shoe Sizes 4-9)