FoxRiver Women's Aztec Crew Socks 62% nylon/36% UltraSpun polyester/2%spandex Made in US Reinforced toe and heel add comfort and longer sock life Made with Wick Dry Technology; Made from Ultra Spun Polyester Smooth, flat toe seam adds comfort and durability Memory-knit construction holds form wash after wash Reinforced toe and heel add comfort and longer sock life