100% polyamide. Sports backpack with anti-theft cable and carabiner with digital combination padlock. Integrated and detachable bum bag. Top zip fastening. For extra security, the bag features a roll-top closure and a security tape attached to the carabiner. Large front pocket with easy decoration access and shoe holder with side openings for improved ventilation. Laptop compartment with padded inner. Object pocket with zip fastening at the top. Padded side handle and top handle with Velcro fastening. A bum bag to carry valuables is attached with a press stud to the inside back panel and may be used without the backpack with its adjustable belt with buckle.