Fox Outdoor Backpack: This compact modular hydration backpack from Fox Outdoor has a compact design that is ideal for cycling, hiking, sporting events, travel or daily use. It comes complete with a 2.5 hydration bladder. It is made of Extra Heavy-Weight 600 Denier Material. It has 1 main compartment and 1 front pocket with inside mesh accessory pockets. There are modular attachment points on the front face a top carrying handle and dual hydration ports, concealed on straps. It has loop panels for ID’s & patches and a back panel hydration pocket. It is padded back with “stay-cool” mesh. The shoulder straps are padded and adjustable and it zips closed. Capacity : 11 Liters / 680 cubic inches. 5" x 8" x 17". 56-35