With or without a mat, on virtually any surface, our Ultra-Grip Yoga Socks give you the ultimate in no-slip stability. Featuring a unique half-toe design, they provide superior grip at the heel and ball of the foot while still allowing the toes to spread and connect for additional balance and control. 81% cotton, 11% nylon, 5% polyester, 2% rubber, 1% spandex. China.