Polyester lining

Zipper closure

Military Tactical backpack size approx.:

45L【11.81"*19.86"*11.81" / 30*50*30CM (W*H*D)】,Capacity: 45L;25L【9.45"*14.96"*8.66" / 24*38*22CM (W*H*D)】,Capacity: 25L;

Military backpack is made of high density fabric--durable and water-resistant

Molle tactical backpack has molle system, Molle webbing throughout for attaching additional tactical pouches or gear as 3 day assault pack backpack combat molle backpack.

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.

Tactical assault pack backpack can be used as 3 day assault pack, range bag, hunting backpack, survival backpack, army backpack, trekking backpack or day pack for daily use