Material:80% Combed Cotton+17%Polyester+3%Spandex. Not only are they comfortable, breathable, great quality but they are also very durable Real Invisible Socks: These no show socks fit most low-cut shoes like Loafer, Sneaker, Dress shoes, and Boat shoes. Socks are not too thick or too thin, perfect for daily wear Non-Slip: The back grips keep the socks in place, doesn't fall off the foot/into the shoes SIZE: Fit Men shoe size 10-14, the stretch of the socks are good Package&Wash: Include 6 pairs of cotton socks, machine wash with cold water.