This is not really a review for THIS specific pack, as I have not yet used it--I only just ordered it. But I wanted to sing the praises of Outdoor Products backpacks. I've owned two before, & one of the zippers just died on the current pack, which I've had for almost 8 years. When I needed to replace my first pack, I had forgotten about the lifetime guarantee, but miraculously found the paperwork. So my second bag (a Power Pack 3.0 to replace an earlier version) was free for the cost of sending OP my old bag. The bag I'm replacing is my day-to-day work bag (I'm a teacher) & travel bag (it's seen quite a lot of miles). These are great computer bags & general backpacks--very versatile, lots of pockets & compartments.
I could, yet again, take advantage of OP's *very* generous lifetime guarantee, & get yet another free backpack. But you know what? I believe in these products enough, & I appreciate this company enough, that I'm not doing so--I just straight-up bought the new bag. And how lucky was I that it happened to be 20% off the very day I needed to order it? I mean, you just can't beat the price.
As an FYI to anyone considering buying an OP backpack: That lifetime guarantee is for real. Plus, I found OP very easy to work with when I wanted to use that guarantee to replace my first bag, way back in 2013. So just know that you can depend on these products, & if they do wear out (& they take a beating), OP will honor that guarantee without hassle or delay.