So if you "soft" packs, this foldable roof box is a great thing. Bulky and edged things are emerging from the outside, in the long run I would imagine that the box thereby is eventually broken. We are 960 km (2x) down with it, and everything was super, nothing has slipped, there were no complaints. However, we have all the things a very large plastic bag packed because in heavy rain (at least in the state on its doorstep) fast moisture has collected in the folding box. To rule out that after nearly 1000 km clothes are wet, we have everything packed in an XXL bag. This is m. M. after only drawback. Think everything is in high humidity inside a little wet. (Peugeot 308 with this purchased roof carriers) Nevertheless, we were very pleased and the box would also recommend.