This pack is big, comfortable, and has plenty of room to carry everything. It regularly carries all of my textbooks, notebooks and stationary supplies for school with plenty of room to spare. It also accommodates a 15” Laptop very well. In addition to school I have used this pack as a day pack and found it very comfortable for extended periods of use. The Laptop sleeve can also accommodate a water bladder, but sadly there is no hole for the outlet tube, and the waist strap can seem a little small at times, but other than those two items it is a great, large storage general usage backpack.