At the beginning it seemed amazing! Very firm and comfortable. If you sat down near the edge, the mattress would immediately adopt a weird form and you could almost fell, but it was I could live with as long as it kept it’s overall firmness. However, it’s been less than one month now and the matress’ “extra” (!) firmness (the reason why I bought it in the first place) it’s already gone! And you can already see the difference if you now lay down just in the middle, where none of us usually sleeps. Honestly, having paid what I paid for this item, I would have expected a different quality and perfomance.