Made From High-quality Materials: These athletic ankle socks are ready to withstand use, They are made of 85% cotton 10% Nylon 4% Polyester and 1% Spandex. Suitable for US Size(M Men: 6-10 / Women: 7-11), and Size L(Men: 10-13). High Performance Socks: Our low cut athletic socks offer the perfect balance of being comfortable as well as high performance and moisture wicking, keep you training in comfort and moisture management. Cushioned Athletic Running Socks: Cushion all of the sole and reinforced toe & heel use thicker yarns for extra durability and comfort in high-wear areas. Extra thick padding can shock absorption and to protect your feet. Design Detail: Mesh ventilation can cool heat and keep you feet at the perfect temperature. Suitable compression in arch to protect you when you walk. Elastic cuff tab can lock the heel and prevent socks slipping when wear, also protect your heel from abrasion. 30-DAY Money Back: Machine Washable, tumble/Air dry, do not iron. Include 7 pairs in one package. In case a customer receives a defective item, we will always replace it for free. If any problem, please don’t hesitate to contact us, we provide 7x24hrs customer service.