I work in a warehouse that requires inspections of backpacks, purses, whatever on the way out. The security people love the fact that they do not have to open mine up and rummage through it as they do many other people. I have had my current one about 9 months and yes, it has finally ripped along a seam. I think 9 months was a great run as I load a variety of heavy stuff in it and it gets a lot of abuse. I have had much more expensive "regular" backpacks tear and the like much sooner than this one did.
We just need to accept that this is a type of PLASTIC. If you keep it in a cold car it gets stiff and will crack if flexed too much while cold. It will also tear at the seams if over loaded - but my cloth/nylon backpack did too.
I have never had a zipper problem with this as so many others have stated. Of course I am an adult and probably take more care than a young person does.
I also did not expect this to last a lifetime - or even a year as many folks do - guess I just have lower expectations for plastic items...
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