【Expandable】This is an expandable backpack. When you have insufficient capacity, you can expand it with the zipper on the side. The thickness of the side can be switched between 8'and 13', and the capacity range is 39L to 64L. The backpack is equipped with a chest strap to cope with the weight, so it is very suitable for use as a 3-day assault backpack, life-saving backpack, military backpack, school and hiking travel backpack or daily backpack.
【Durable and Practical】Assault backpack made of 600D materialwith excellent straps and excellent zipper tear resistance， it can keep the gear clean and dry. Thick padded shoulder straps with a fixed waist belt, 2 walkie-talkie bags on the strap of the bag, it is convenient to use the walkie-talkie when walking，perfect for mountaineering, hiking.
【Fashion Design】Assault backpack wiht double-stitched heavy-duty zippers and practical drawstring, detachable shoulder straps, more convenient to use, ventilated mesh padded back and shoulder straps, breathable and comfortable, backpack velcro area matching personalization according to personal preference makes your backpack more personalized. There is a kettle mesh pocket on the side (kettle not included). It is convenient for you to drink water during outdoor activities.
【Stylish Space Design】The size of the assault backpack is approximately: 14.5'* 21'* 8'(W * H * D);there are four main loading space, the main bag can hold books ,clothes, first aid kit, food for 3 days, laptop , work package, etc. The middle bag can hold keys, phones, wallets, bullets or gadgets.