Carhartt YA225 Kids Midweight Coolmax Performance Crew Sock - 2 Pack. 77% CoolMax polyester/21% nylon/2% spandex. CoolMax helps keep feet dry and comfortable. Anti odor technology. Crew length, midweight sock. Mesh knit instep,side,arch and ankle panels for better ventilation and breathability. Spandex reinforced for a secure fit. "No feel" toe seam. Cushioned foot for added comfort. Two pair pack.