Have been buying determined: the recommendation of Stiftung Warentest, reviews of Amazon buyers, buying test on mattresses. In the test it, I found the mattress quite pleasant to lie. So far I had always harder mattresses, what I had expected and the hardness strength H3. The first night on the mattress was quite uncomfortable for me. I had the impression that I'm lying in a hollow. Several times I woke up at night. In the morning I had tension from the neck to the coccyx. (I rarely back problems.) For the next night I used the other side of the mattress - even that was not the truth. The mattress the longer chairs stood for me as too soft out, although it was very different at the beginning.
On the mattress itself is nothing to complain. Materials and workmanship are good. Are helpful especially the loops when turning the mattress that I could handle well even as a small little person. The mattress gets me ***, because it is not me useful.
My husband took the mattress, for it is the Mattress thickness H3 fine. From my husband gets the mattress *****.
My conclusion: I go into a shop and buy any mattress longer on the Internet - I have to try out on the spot. What is not to say that I would not order more goods from Amazon, so far I was quite satisfied.