Ansich not bad, if indeed work time

My wife and I have "granted" at any one of the mattresses.
One of the mattresses has also extended directly, has a pleasant and supportive hardness and would be worth a four-star review.
The other mattress, however, is not at first worked. While head and foot have expanded to the full size, teamed up in the middle hardly anything. This condition has not improved within a week (it looks as if an elephant had sat down on the mattress). The state after one week I can incidentally still judge because Amazon has not yet manage to organize retrieval.
Once we have received and unpacked the replacement delivery were initially relieved to note that this mattress is better than its predecessor. We have let them rest for a night and the bed equipped with two mattresses the next day.
The night was then very sobering. While the mattress was really stable, I'm sunk very deeply on my mattress. Added to this was that I would have fallen three times almost out of bed because the mattress to the edge provides no support.
Conclusion: If the mattress is fine, you really sleep well but unfortunately it seems a healthy mattress to be a fluke and not the rule.
Dear spend a little more money and buy it right quality.