This bag is the most durable duffle bag I have had. The quality is outstanding, from the actual material it is made out of, to the zipper quality and the harness to wear it like a backpack. I had to test its water proof abilities, so I held it underwater in my pool to see how much water would get in, and not a single drop of water made it through. Not to mention, if you dont take all the air out of the bag it actually floats. When it was filled with air, it was able to support my body weight in a pool (160-165lbs). I am more than impressed, and will only be buying Uncharted Duffle Bags moving forward. I highly recommend.