The Nike Cotton No Show Socks: Sweat-wicking comfort Hidden from view but with color that pops, the Nike Cotton Non-Cushion No Show Socks (3 Pair) arrive in a variety of colors while providing a secure, snug fit. Benefits Dri-FIT fabric that wicks away sweat to help keep feet dry and comfortable Reinforced heel and toe for enhanced durability in high-wear areas Arch support for a secure, snug fit Additional Details Fabric: Dri-FIT 64% cotton/35% nylon/1% spandex Machine wash Size Chart MEN\'S & WOMEN\'S (unisex) XS S M L XL XXL Europe 30-34 34-38 38-42 42-46 46-50 50-54 UK 12 - 2 2 - 5 5 - 8 8 - 11 11 - 14.5 14.5 - 15.5 Men\'s US - - 5.5 - 8.5 8.5 - 12 12 - 15.5 15.5 - 19.5 Women\'s US - 3.5 - 7 7 - 10 10 - 13.5 - -