Capacity- Tactical backpack Size approx.:11"*19"*8" / 28*48*20CM (W*H*D) 28L Material- Military backpack is made of 1000D polyester fabric water-resistant durable with double-stitched, Heavy duty zippers and stong nylon cord pulls. Multifunctional- Front and two side pockets with molle system, Molle external expansion system designed to be used for attaching tactical pouches water bottle and gears as bug out bag backpack, The army rucksack has fleece lined upper pocket works great with shooting glasses, Padded back area & shoulder strap. Zippered bottom pocket with two mesh pockets. The molle tactical backpack have Main cargo compartment with pocket for laptop or 2.5L hydration bladder, Two hydration tube holes with velcro closures (backpack didn't include hydration bladder) This tactical assault backpack can be used as tactical day pack, Combat backpack, Survival Rucksack, Hunting backpack, Range bag, Military army backpack or Trekking backpack.