The 50L A-Boa.u I would describe more as a Day Night-Pack instead of a Backpack. It is perfect for hiking trips and camping trips. It has lots of compartments small and large. To give you an idea of just how much this can hold I was able to pack 3 days clothes in one compartment with soap, shampoo & deodorant travel pack, brush in the large main compartment. My cell phone in one of the smaller outer compartments. My keys in another small outer compartment. My tablet and two battery packs in the outer medium compartment. A retractable fishing pole and small tackle case in the bottom compartment. Two large water bottle in the side net bottle compartment Then using the straps on the side and the back I was able to pack a 2 man tent, compact pillow & sleeping bag. I used a carabiner to hook on a cooking stove kit and another for a noose hook of rope with folded 10x10 tarp. That's a whole lot of equipment.
Features:
Water Resistant Nylon Material
Rain Cover to Protect Gear
Easy Zipper Loops
2 Netted Bottle Compartments
12 Total Compartments (Zippered & Open)
The straps and back is padded with a breathable material for more comfort. It's lightweight & strong. I am very happy with the size and features of this nice Day/Night Pack.