TractionSocks Non-Slip Organic Cotton Socks - Value Pack of Three Pair (GREY, L) Value Pack of Three (3) Pairs! Lower Cost Per Pair! Organic Cotton Cushioned and Reinforced Non-Slip "Grip" Sock! Sizing: Small = Women's 4-6, Medium = Women's 6.5-9.5 & Men's 5-8.5, Large = Women's 10-13 & Men's 9-12.5 Great for Low-Impact Exercises such as Yoga or Pilates, or Simply Lounging with the Safety of a Non-Slip Sock! Great Hygienic Solution for Travel! Wear in the Plane, the Hotel, Train or Automobile! Keep Germs Away!