Nike Performance Crew Older Kids' Socks (3 Pair) Boys,Girls,Kids, White, Size. comfort and support made with arch compression and a fabric blend that helps keep sweat at bay, the nike performance crew older kids' socks (3 pair) offer comfort and a secure fit. benefits sweat-wicking fabric to help keep feet dry and comfortable rib cuffs for a snug, comfortable fit arch support for a secure fit product details fabric: 62% cotton 35% nylon 2% elastane 1% polyester machine wash imported.