This is a great  bag that is well reinforced in every way except one small but  important one-- which is the front bottom half of the bag!  I thought it was very odd and a forgotten part of the construction that there is only a single layer of fabric at that point.  Nothing has ever dropped out of my bag, and I do load it up on occasion, but I think that single layer shortens the lifespan of the backpack.  It's got great zippered sections to it.  Good quality hardware and zippers, though one zipper track in the main section seems to have been changed its position.  I'm getting a little separation near the front section and some fraying on a couple of  the zipper pulls.  Still, it's a great bag, and the little surprise is a bottom  zippered section on the back half underside that has a bright  yellow raincover in it,  which stays attached so it  cannot be lost.  I would definitely recommend this as a good, heavy duty back pack. Some of the trailing straps are a nuisance, but still a darned good backpack!

Okay, a few months have passed, and I need to comment on the zipper holding in the nifty little rain cover has broken: there haven't been that many rain storms!  So, quality control needs to work on that.  Also, the stitching should have been more standard instead of the looser basting stitches on the two straps, as the trim is separating from the main strap on both sides.  on the front, one little hole caused by improper stitching above the media pocket has started getting bigger. Also, the fabric zipper pulls have begun to fray a little bit.  STILL,it's a great value for the money so long as it remains priced around $50 or less!