88.3% COMBED COTTON,10.5% POLYESTER, 1.2% SPANDEX. You Can Refer to The Size Chart on The Left Side Of Page.Non Slip Off: Proper compression band designed in arch fits the individual shape of your foot, hugs your foot evenly to keep the sock in position in your shoe. The elastic band holds the mens ankle sock tightly around your ankle, in order to prevent athletic sock sliding from your daily walk, running, cycling, hiking, tennis.Awesome Fit for Running: These mens running socks are made of combed cotton. Cushion on the toe and in bottom with thicker yarn , reduces the impact and friction when your move, and prevent the mens socks from broken. Seamless on the toe can eliminate the friction to prevent blister.