Hot Leathers Head Butt Skulls Zipper Hoodie. This 11 oz. fleece 70/30 Cotton-Polyester blend zip-up hooded sweatshirt comes in the color Black and contains two pockets. The front features a screen printed image of tribal skulls head butting each other, with a similar tribal skull design on both sleeves. Wear this classic zip up hoodie to the next big motorcycle event or wear it when you ride the open road to complete your biker look. Get yours today!