ZHOL&reg; Sport Outdoor Military Rucksacks Tactical Molle Backpack Camping Hiking Trekking Bag (Woodland Digital) Tactical assualt backpack Capacity: 34L. Size approx.:11"*18"*12" / 28*45.5*30CM (W*H*D), it's small backpack; Military backpack is made of high density fabric-durable and water-resistant. The assault pack with double-stitched, Heavy duty zippers and utility-style cord pulls, Side and front load compression system, Comfortable padding back area, Ventilated mesh padding shoulder strap. Military backpack has hydration compatible that works great for 2.5L hydration bladder (backpack didn't include hydration bladder) as hydration back pack or outdoor camping hiking backpack school backpack. This tactical assault backpack can be used as 3 day assault back pack, bug out bag backpack, combat backpack, range bag, hunting backpack, survival backpack, military army backpack rucksack or trekking backpack.