This backpack exceeded my expectations at all levels! This backpack is 100% waterproof guaranteed! I was walking in a heavy down pour for several hours and all my personal belongings inside the backpack were dry.
It is very comfortable to use this backpack while walking for several hours even carrying heavy size items due to the padded back support.
I recently travelled with this backpack and it was really convenient because the backpack perfectly fitted below the sit inside the airplane and also it fitted perfectly on top of my 20" carry on luggage (it stands up-right on its own).
I love all of the small details of the backpack, such as the carabiner loops (I used them to hang misc small items), waterproof phone pocket (I can use while being outside in a downpour or water-related sport or activities), and the mesh water pocket (I use my Miir 25.3 oz water bottle and it fits perfectly)
Also, inside of the backpack it has a laptop sleeve (fits my 14" laptop perfectly) which is convenient when working remotely or working on the go). Moreover, it has two small pocket organizers that is useful for small size items like carabiner loops, portable chargers, etc. Also, it has a medium sized-zipper inside which you can use to store additional items.
If you're looking for a 100% waterproof, strong material, versatile use (commute, hiking, traveling and water-related activities or sports), then this is the ideal backpack for you.
P.S. The only small quirk with the backpack is that due to the welded and waterproof zippers, it is kind of a struggle to open and close the zipper. However, there's a simple solution. You can either use a lip balm or a silicone lubricant and the backpack will open and close very smoothly.
Enjoy this Amazing backpack! :)