This backpack is very large inside. The main compartment seems to be big enough for an average sized college textbook, a small book, a planner, a small 3-ring binder, a notebook, and a few loose papers. The backpack is medium sized overall; it is not so small that a student couldn't make it, but it isn't large enough to accomodate copious amounts of books or other school supplies. Overall, the comfort of this backpack is, on a range of ...