Desc.:Military Tactical Backpack Large Army 3 Day Assault Pack Bug Bag Backpacks Rucksacks for Outdoor Hiking Camping Trekking Hunting. Military Tactical backpack size approx.:13"*20"*11" / 33*50.5*28CM (W*H*D), Capacity: 40L; Military backpack is made of 600x600 Density fabric, durable and water-resistant. The molle tactical backpack has molle system, Molle webbing throughout for attaching additional tactical pouches or gear as 3 days assault pack backpack combat backpack for men. Assault pack backpack with double-stitched, Heavy duty zippers and utility-style cord pulls, Side and front load compression system, Ventilated mesh padded back area & shoulder strap,breathable and comfortable. Military backpack has hydration compatible that works great for a hydration bladder (backpack didn't include hydration bladder) as hydration backpack or outdoor camping hiking backpack. This tactical assault pack backpack can be used as 3 day assault pack backpack, range bag, hunting backpack, survival backpack, army backpack, trekking backpack or day pack for daily use.