I went looking online for this specific backpack.  Bought it at Dicks 2 years ago for about twice the price.  We bought this for one reason, it is the largest backpack we could find (in cubic inches).  My daughter lugs almost 40 lbs of books a day back and forth to school (and soccer and track practices) and this backpack fit them nicely and held up for over one school year.  I am surprised it lasted  that long with the abuse it took,  Eventually it was a zipper that gave out but the material was still in great shape.  I bought one for my son too for this school year, before replacing my daughters.  The backpack also has an attached rain cover built in at the bottom that you can unvelcro and pull over the backpack when it's raining.  This was especially useful when the backpack was lugged to her sports practices.  I would highly recommend this for someone looking for a very durable backpack at a reasonable price...