This is an amazing little bag. Perfect for my stuff everyday considering I don't carry my office laptop with me. It helps me keeps things to the minimal. My 10.5" iPad Pro with case fits perfectly in the sleeve, the actual computer sleeve I use for my papers, which will fit snuggly but a folder may get a bit bended in the edges. Besides that I carry an Eagle Creek Tube Cube with every carry essentials, an organizer for my pens and lunch box with some room to spare, but if need a little more room try the 18L big brother.
The pack is very well made has an exterior pocket that does not steal space from the inside but if your pack is fully loaded it can get tight to get things in and out the pocket.
Basically I love the fact that I can really carry my stuff in this little pack that has a low profile and looks very professional for office settings, again, I did not bought this pack to carry my laptop and did not wanted to get a bigger pack to do that capability and over pack stuff because the laptop would not be there.
Thule as always did a great job with this pack, it is light, it is comfortable and durable materials