This Maxibrief boxes are very stable and have the best performance I've seen to date. In some other Farikaten the rear wall is not closed. These but the content is umschossen fixed, even if the lid is opened. The only thing I've noticed so far that is the convolution does not always work so well, especially if you want to fold the side panels inwards. I use these boxes for shipping and for storage (ie multiple use) for small parts, since they represent a cost-effective alternative to other grading systems. Here you have to rework with a ruler the embossed creases slightly. But I admit nevertheless 5 stars because my case with the multiple use of a safe is very rare.