Nike HBR Gradient Crew Men's, Black, Size YXXS (6.5-9.5). Everyday comfort: The Nike HBR Gradient Crew Younger Kids' Socks feature soft fabric and snug arch support to help keep your feet comfortable and supported., Benefits: Dynamic arch support for a secure fit, Reinforced heel and toe for durability, Product details: Fabric: 70% cotton 28% polyester 2% elastane , Machine wash, Imported: .