Two Sizes Shoe Size 8-13 (Adult Large) or Shoe Size 5-10 (Adult Medium) The "happy sad mask" is primarily a visual metaphor, drawing inspiration from the classical comedy and tragedy masks used in theater to symbolize opposing emotions. * 85% Cotton, 10% Nylon, 5% Spandex * Attention getting design - Guaranteed to start a conversation. * Up your Sock Game with these fun socks! Unisex * High quality fabric that will not rip or tear - Very Comfortable * Best if washed in cold water. With your purchase, the Sock Panda donates socks to someone in need. Thank you!