Bellarina has everything you need in a barre sock. Bellarina struts her stuff with a heel tab that provides extra comfort and protection to the Achilles tendon. She rocks an arch band for graceful lift and support. Wear Bellarina for all barefoot activities like barre, Pilates, yoga, and dance. Stick To Your Practice. Patented non-slip grip keeps your feet in place. Five toe design allows toes to move and spread naturally. Hygienic alternative to bare feet. Fitted heel keeps sock in place to eliminate bunching and twisting. Made with organic cotton. Unisex sizing. 90% Organic Cotton 8% Spandex, 2% Other Fiber. Printed socks: 58% Polyester, 32% Cotton, 8% Spandex, 2% Other Fiber. Machine washable. Wash inside out in gentle cycle. Line dry or low heat in dryer. No bleach or iron.