This is a rigorously tested bag, that has been used at least 3 times a week during the 6 months we have had it, it has travelled around London, been hiking in North Wales and Norway and recently went skiing in France. Apart from being a little dirty it still looks as good a new, there is no wear on the bottom from being dumped on the ground due to the tough nylon material, the stitching is still perfect and the padding in the back and straps remains full and supportive.