Adidas Classic Badge of Sport Backpack.Adidas Classic Badge of Sport Backpack. This simple and durable backpack is made with a series of recycled materials, with at least 60% recycled content. It features a main compartment with internal organization, a front zip pocket, and side pockets for essentials like a water bottle. The padded and adjustable shoulder straps, along with a padded back panel, help comfortably distribute weight. The backpack has a volume of approximately 27. 5 liters,