I have been using this backpack for three years
I wear this backpack daily for school and sometimes for travelling. It looks smaller on the outside but because it has a lot of pockets I can fit everything I need. The durability is amazing it still looks great after heavy use of three years. The only downside is that it won't hold 27" very well - it hangs around loose because of its weight. 22"s are fine. I have bought other backpacks but this is the one I keep coming back to.