Text books weigh a lot, and you don't have to have a college degree to know that all that weight will tear an ordinary backpack apart before your first midterm. The JanSport Right Pack Backpack, with it's nearly indestructible leather and Cordura construction, is the classic heavy-duty backpack. Plus, the padded shoulder pads will keep your arms from falling off whether you are hauling it to class or taking it out for a weekend hike. 31 liters