Why choose this tactical backpack? We took the classic military backpack design as our starting-point, then we tested, upgraded and improved until we were satisfied that we created the best in class fitness and outdoor backpack. Today it?s trusted by Outdoor explorer and athletes. The Military backpack will take whatever you throw at it. Made from tough high-density polyester, it's waterproof and rip proof with lots of pockets for all your kit. 45L capacity with multiple compartments, pouches and zip pockets High-quality brand zips and upgraded extra-durable plastic hardware Dedicated laptop/device compartment (Up to 17'') MOLLE design and system with front and side webbing for extra attachments Ergonomically designed adjustable compression straps with hook-and-loop ties for comfortable carrying Backpack opens flat to 180 degrees for easy packing/unpacking All compartments have two-way openings, storm flaps and pull tabs for easy access Velcro strips to add a patch (all backpacks come with the USA patches as standard which can be removed) Waterproof and Rip Proof Note: Due to different measurements, it is normal to have an error of 0.4-1inch in product size