This backpack lasted the entire school year for my 6th grader.  I'm not sure what he carried, but his backpack always seemed to be stuffed full.  My only complaint is that it didn't wash well.  When I put it in the wash at the end of the year, the bag was ruined because most of the logo peeled off in the washing machine.  Maybe I should have turned it inside out & washed on a gentler cycle & cold water - lesson learned for next time.