Mato & Hash 5-Toe Exercise"Barefoot Feel" Yoga Toe Socks With NEW Full Grip 5 Toe Design Supports Natural Alignment Of Foot For Better Tactile Movement, Increased Circulation, and Increased Balance. Non-Slip Sole Provides Superior Grip On Slick Surface With No Bunching or Twisting Breatheable Construction - 75% Cotton 22% Polyester 3% Spandex Hygienic Alternative To Bare Feet SIZING: Small/Medium fits approximately Men's Shoe Size 4-9/Women's 5-10. Medium/Large fits approximately Men's Shoe Size 10-12 and Women's 10-11.