Dri-FIT fabric wicks away moisture to keep feet dry and comfortable Rib hem Left/right-specific for enhanced fit Half-cushion terry foot for comfort and shock absorption Reinforced heel and toe for enhanced durability in high-wear areas Your feet will feel the high-performance difference in the Nike Dri-FIT Half Cushion Crew Socks (3 Pair), featuring arch support and sweat-wicking fabric to help keep them dry. Sizing: Small - Youth 3-5 and Women's 4-6 Medium - Men's 6-8 and Women's 6-10 Large - Men's 8-12 and Women's 10-13 X-Large - Men's 12-15