ZTCOO Multifunctional Outdoor Military Tactical Backpack Rucksacks Sport Camping Hiking Trekking Bag (Army Green ) Heavy-Duty Water resistant Nylon pack cloth construction and heavy-duty oversized zippers for extra durability Chest belts can adjust distance between the two shoulder straps and strengthen the stability of the backpack.Adjustable & removable chest belt and hip belt.The waist belts which can disperse the load to the lumbar area more effectively. It makes the backpack more comfortable. Breathable mesh backing for comfort.It is propitious to breathe. Enhanced back support for ventilation and comfort It is made from nylon fabric which is durable and can ensure long term service life. Multiple pockets to meet you at the most.Well crafted and tested, high capacity and comfortable carrying.