I use now for some years, these backpacks and've never bereuht. From experience I can say that a range Dosenbier stow loosely therein and problems with transport-can - what we have loved the things on May 1st! ;-) Over the long term, only the grip belts somewhat more susceptible down under heavy load. But can easily be re-sew and you have been really applied force for the breaking away (eg heavy weight + jerky up or deposed the backpack on only one belt) each other bag would make loose before limp. Otherwise, this bag is indestructible and also ideal to attach patches or buttons.