Material- 75.8% Cotton, 19.6% Polyester, 2.2% Rubber, 2.2% Spandex, 0.2% Nylon. You Can Refer to The Size Chart on The Left Side Of Page. No slipping down & blister resistant- The ankle socks can protect the ankle and avoid blister caused by exercise. The thick tab also prevents the running ankle socks from slipping into the shoe and offers a great comfort and protection. Comfortable and well-cushioned – The athletic socks have thick cushion on the sole and toe, so that you will not feel tired after standing and walking for a long time. Keep feet breathable & snug -these low cut socks are made of combed cotton and spandex, to absorb sweat and prevent your feet from getting wet. Breathable mesh can dissipate heat to keep your feet breathable. Color & Size& Occation: 6 pairs of ankle running socks have 4 sizes from S to XL in black,white,gray and supply women’s shoe size 5-15.5 and men’s shoe size 4.5-14. FITRELL Best Customer Service ? FITRELL pursue best after-sale service to every customer. 30 Days No-risk exchange or return is guaranteed. You can message us if any problems happen, we will solve problems for you immediately until you satisfied.