This bag has held up to daily abuse for months without and issues, the side pockets are sized perfectly to hold a large bottle, the two front pockets have a lot of expansion and can fit books, supply cases, 7 inch tablets and other devices without problem. The main compartment is huge and can reasonably carry several textbooks and a laptop/10 inch tablet in a sleeve. I have two minor complaints, the first being the Velcro that secures the flap, it's not very strong and I would rather have a snap attachment. My second complaint is that it does not have a  hand carrying handle. Both of these can be fixed with some minor effort.