5-Pack includes 5 pairs of assorted boys PJ Masks no show socks. These PJ Masks socks are made up of 97% Polyester and 3% Spandex material and are lightweight and soft. These socks highlight your favorite PJ Masks characters: Catboy Owlette and Gekko! These socks come in size X-Small which fits shoe size 4M - 7M US Toddler Small which fits shoe size 7M - 10M US Toddler and Medium which fits shoe size 10.5M-4M US Kids.Machine wash in cold water.