100% polyester. Large polyester travel bag. Waterproof zip fastening, opening at the top with two-way zip fastening and handles to carry it like a duffel bag. Vertical opening with compression band to use as a vertical handle. Flat bottom opening with inner bag for shoes or to separate worn clothing. Air holes at the bottom. Large, 100% customisable twin side pockets. Padded rear compartment for a laptop measuring up to 18”. Padded straps to carry the bag like a backpack. When the straps are not in use, they can be hidden in the pocket provided.