I have used and abused this backpack for about 2 and a half years, and it has definitely been the most spacious backpack I've ever had. Its fitted just about 3 3" inch binders plus textbooks and a sketchbook. Definitely a practical pack. Sadly after these 2 and a half years the zippers have come to rip and I need a new pack, and I'm definitely considering getting another campus pack. It hard to find another pack with this much space, comfort, and practicality (especially with the cooler pocket on the front!). Also it fits my 32 oz. camelbak water bottle perfectly in the side mesh pockets.