I was with this good piece for 3 weeks in Scandinavia, and have the backpack can experience there in many different situations. In short, it was not satisfactory. The biggest problem I would call the seat belts, which do best with height differences quickly adjust, sometimes on long marches yet. This happens, however slowly, so you noticed the slip of right and pain-free belt adjustment only when an already cross the knack. My girlfriend had a Deuter, in which there was not this problem, In addition, the belts were better padded with this much more expensive piece, which has proven over long distances very useful.
If you plan to go hiking three weeks with this backpack, I can only advise you, the money invested in a higher quality, better contribute to long designed backpack. If you want to use it for trips, day trips or a visit at home, are you doing with the purchase probably nothing wrong.