Socksmith Women's Comfort Wool Solid Knee High Socks 2% spandex Fiber Content: 46% Acrylic, 32% Nylon, 20% Wool, 2% Spandex Sizing: Sock size 9-11 will fit a women's shoe size 6-10 Sizing: Sock size 9-11 will fit a women's shoe size 6-10 Machine washable Made in USA