These no-show sport socks are a great go-to option for daily wear. They are made with an ultra soft polyester and cotton blend material to keep you cool and comfy while sporting a no-socks-look. The generous heel and toe construction helps prevent the sock from slipping. Available in a variety of colors and designs. General sizing guide: Kids (4-6yr) and (6-8yr); ADULT S/M (fits womens shoe size 6-9.5 or mens shoe size 8.5-10.5) and ADULT L/XL (fits womens shoe size 9-12 or mens shoe size 10-13). Made of 77% Polyester, 20% Cotton, and 3% Spandex. Machine wash, tumble dry low.