Injinji Run 2.0 Lightweight No-Show Toe Socks 55 Polyester, 40 Nylon, 5 Lycra Imported Coolmax Xtralife - Superior fiber construction wicks sweat to keep feet dry and comfortable Mesh top to maximize ventilation Compatible with traditional athletic, casual, or dress footwear as well as athletic running toe shoes Ultra-thin, minimalist style performance toesock allows your toes to align and splay naturally Adult unisex sizes Small, Medium, Large, and XL (see size chart)