I just received this backpack so I'm assuming it will hold up over time as others have indicated. Overall, I'm happy with the material it's made from, the zippers, and its light weight. I like the almost invisible side zippered compartment and the small zippered compartment on the back. It's replacing a backpack that I've had for over 18 years and loved, so I doubt that I'll find anything that I feel is perfect. I had to buy the larger size backpack in order to get the width I needed to carry standard size file folders with the long, folded side down and for other things that I carry. This backpack is 19 tall which is taller than any I've ever had, so I'm not sure how it will fit under the seat in front of me on an airplane (I travel a lot). It'll probably be ok if I don't stuff it full. What prevented me from giving it 5 stars is that it doesn't have a reinforced bottom on the outside, so there's no extra padding for my laptop and nothing to take the brunt of the backpack sitting on rough surfaces. It would have been nice if the small, zippered compartment on the front was deeper. It's only about 6 3/4 deep and there's extra space where they could have lengthened it by several more inches. I'm not crazy about the idea that the back compartment opens up flat because I don't feel that I can put things in that section that might fall out; so if there had been an additional large zippered compartment (even a mesh zippered compartment) in that section, it would have been nicer. Despite the negatives, I think this will be an adequate backpack for my needs.
Rating: [4 of 5 Stars!]