80% Cotton Mens Crew Socks Made: 80% Cotton, 17% Polyester, 2% Nylon, 1% Spandex. Suitable for Men’s Size: 6-10 / Women’s Size: 7-11. Extra Thick Cushioning: A terry sole providing extra comfort and impact absorption, wicking breathable Cool Comfort fabric keeps your feet cool and dry, the ideal athletic sock for all your training. Enforced Toe Seams & Heel: Reinforced heel and toe for enhanced durability, provides a smooth, virtually seamless fit. Maximum cushioning around the foot for added comfort. Stay up Top: Crew length socks stay up and hits at mid-calf, durable elastic ribbing keeps socks from slouching, and ventilation channels enhance air flow, arch Compression Support keep socks stability. Package contains 6 pairs of socks, suggest machine wash or hand wash. 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.