I have two different naturehike bags, and while this is a great size, it falls short of the other bag:1) The inner pocket has a basic flap and so small items often fall out and get lost in the main compartment. The inner pocket should have a zip.2) Water bottle pockets have limited stretch and so are either too loose for small bottles or cannot stretch to hold larger bottles.3) The front elastic clip is a bit useless. It can take a small jumper or microfibre towel but doesn’t have much stretch so can’t hold a thicker jumper.If you can survive with the lesser capacity, I’d highly recommend the other (smaller) naturehike backpack.