This IS NOT a sleeping bag as the picture might suggest, but really a survival bag manufacture on the basis of a hybrid material / composite: probably mid-aluminum mid-plastic!
So it will not be possible to use it as a sleeping bag as such and after the return of people who have used it will be difficult to reuse many times, but the most important point c '' is the significant condensation that this "bag" generates. So you may be fully hardened after use: this is understandable in view of the material ...
I had not taken into account the negative opinions (1 star) on the German site to and through google translation I have come to understand my mistake, or at least it was a confirmation of my feeling after receiving the product.
Conclusion: this is too expensive for use even as a survival bag (compared to other products for the same purpose), and it really will not take longer than a simple aluminum film cost a handful of Euro ...
I just wanted to share things objectively compared to other rave reviews from people that have not yet tested ...