Positives:
+ Delivery in a space-saving vacuum packaging (rolled)
+ Pleasant land height of about 16 cm
+ Mattress cover removable and washable at 60 ° C in the washing machine
+ Even after 4 weeks of daily use dimensionally stable, not a "by lying"
+ Supposedly suitable for allergy sufferers (I can not judge)
+ Reasonable price of less than 100 euros
+ Mattress in all standard sizes available
Be careful when Temper:
This hardness H3 is for people with a body weight of about 70-120 kg is recommended, lighter persons with a body weight of about 40 - 70 kg should select the hardness H2.
I sleep very well on the mattress, but also have to mention that I fortunately do not have back problems. Because whether it is an "orthopedic" mattress, as specified by the manufacturer, or whether it is not more likely to be a product for the Durchschnittstsnutzer, I can not say for sure. But I would advise you to be wary of any back pain and be better advised in a specialty store.
Whether a mattress is right for the respective owners, in my opinion, is a very subjective thing. Therefore, I am also - and I must say in all honesty - skeptical whether you should buy his mattress on the internet or is it rather in a local store. Just because a person is sleeping very well it does not mean that it comes just as person b. And a return, including return I imagine also difficult before, if you have not opened the vacuum packaging, because how can you produce as a private citizen this original state?
All in all, you get a comfortable mattress at an affordable price. Personally, I sleep very well for almost a month later and have been pleasantly surprised. So far I could not find any defects, which means I'm going to add a response if necessary, if I were to find negative (such as scratches) with time.
Updated on 20.08.2014:
I for about 3 months now sleep on this mattress and can not complain. It shows no denting, I did not get back pain and sleep very well on it.