The Nike Cotton Cushion No-Show Socks: Comfort and support Made with a cotton blend that helps keep sweat at bay, the Nike Cotton Cushion No-Show Socks (3 Pair) offer arch compression for a secure fit. Benefits Sweat-wicking fabric to help keep feet dry and comfortable Rib cuffs for a snug, comfortable fit Reinforced heel and toe for enhanced durability in high-wear areas Arch support for a secure fit Additional Details Material: 68% cotton, 29% polyamide, 2% elastane, 1% polyester Machine wash Size Chart YOUTH XXS XS S Age (years) 4 - 6 7 - 10 11 - 13 Europe 26 - 30 30 - 34 34 - 38 UK 8.5 - 12 12 - 2 2 - 5 US 9C - 12.5C 12.5C - 2.5Y 2.5Y - 5.5Y