Unisex carhartt wip Kickflip Backpack. Made of polyester blend canvas (recycled), the unlined Kickflip Backpack is a water-repellent model. It features zippered and mesh side pockets, and closes with a two-way zipper. The shoulder and back straps are padded for a more cushioned feel, while all-around buckles and elastic board straps at the front offer additional functionality