Nike Elite Cushioned Quarter Reflective Running Socks, Black/Metallic Silver, 10-11.5 Size Large = Men's 10 -11.5 & Women's 11.5 - 13 Reflective details stand out in low-light Left/right specific for enhanced fit Zoned Cushioning helps absorb impact where you need it most Fabric: Dri-FIT 72% Nylon/24% Polyester/4% Spandex