I think this is 20l? I still think it’s a cool bag for someone. The material started to separate where there is yellowing. I cut off the outer layer in the spot at the top of the bag because it was tearing particularly bad there. A plain backpack with 2 water bottle stretchy side mesh pockets, 1 outer pocket on front of bag, and a main pocket with a laptop sleeve and another small pocket at the top of bag for pencils or something. It’s used but the only functional issue is the hole I cut out of the peeling fabric.