For Bare Feet Pittsburgh Steelers Patches Socks Cotton/Acrylic/Polyester/Nylon/Rubber/Spandex Officially Licensed Featuring Pittsburgh Steelers 53% Cotton/34% Acrylic/6% Polyester/4% Nylon/2% Rubber/1% Spandex Quality Knit-in Design Size Medium (Men's 5-10, Women's 4-9), Size Large (Men's 10-13)