QUALITY MEN’S Crew SOCKS: Made of 95% polyester,5% spandex. Our men’s crew socks are strong, durable and breathable enough to keep your skin to keep you dry and comfort. Moisture transport system wicks sweat away from the body. SIZE: One Size Fits Most Men. Mens Shoe Size 6-12 (US)(Sock Size 10-13). MACHINE WASHABLE: Machine wash cold with like colors. Only use non-chlorine bleach when needed. Tumble dry low. Do not iron. Do not dry clean. PERFORMANCE: Deep Heel Pocket-Engineered heel pocket to provide true fit during wear. Arch support-Arch support to improve foot arch fatigue and keep sock in place. Reinforced heel and toe-Reinforcement in heel and toe provide durability in high stress areas to dramatically in improve product life. PACK & STYLE: All Pack included 6 pairs. The color is classic, subtle and easy to coordinate. The color and comfort level means they can be worn as men’s dress socks, casual socks, athletic socks.