I have used this backpack during my travels over several years in many countries. It packs down and fits perfectly in my carry-on ready to deploy for day trips. I have used it while it has been slid over boulders, walked through trees and shrubs that poke the bag, and scrape it against walls and surfaces. It is still a champ at keeping the contents dry during river crossings, while riding on boats, walking through rainstorms, enjoying beach days, and passing by waterfalls. I appreciate the volume of gear I can fit into it, and that there is a small zippered pocket for quick and easy access of essentials. One improvement that I would like to see is to add a water bottle pocket on each side of the backpack with a small loop to clip/secure to. I have tried clipping water bottles to the bag and they just flop around, I have tried putting the bottle inside the bag, but it just isn’t convenient anytime you need to access water, I haven’t tried putting it inside the zippered pocket, but most bottles I have take up the entire space. I haven’t found a great solution, so adding water bottle pockets would make this awesome bag spectacular!