From Nike, these socks feature: From playtime to game day, the Nike Everyday Socks keep you going They're powered by Dri-FIT technology and mesh at the top and cushioning underfoot to keep your feet cool and comfy with every move. Dri-FIT technology helps you stay dry and comfortable. Cushioning underfoot means targeted comfort. Breathable mesh at the top helps feet stay cool. 75% cotton/21% nylon/2% spandex/2% polyester Machine wash Imported. Sizing Notes: S=3-5, M=5-7