One is the backpack from, the other is attached to the MOLLE tactical vest
The bags are zippers closed and easy to open and close.
Shoulder straps are filled, strong enough, can withstand a lot of weight, can be loaded into large capacity water bag.
There are multiple intervals to put a variety of tools and items.
Widely used in outdoor sports, hunting, tactical games, travel, leisure, hiking, camping, mountaineering, cycling, running etc.