The Spitfire Classic '87 Bighead Over the Calf Sock in Charcoal/Red/Black is knit from 87% cotton, 12% polyester and 1% spandex on a 132-needle half cushion construction. A cushioned footbed adds comfort inside your skate shoes, and the over the calf height stays put all day. One size fits most. Spitfire Wheels – fueling skateboarding since 1987.