Lupo Women's Butterfly Non Slip Yoga Socks 86% Cotton / 13% Nylon / 1% Other Fiber Imported Women's essential sock has a custom butterfly shaped silicone at the base to provide grip at key contact points on your foot Ballet inspired design has a strap across your foot for added comfort and stability Made to absorb sweat as well as allow breathability to keep you dry and comfortable during your workout and/or daily use Essential grip sock has been designed at low height to give you freedom and mobility