I am not impressed with the fact that the warranty does not cover the mattress sagging and it is way too mushy for me. I am so sad about how difficult it is to find a really good mattress again. Back in the 90's I bought a mattress from home shopping network. And it was the most comfortable mattress in the world. Even 20 years later it was still just as firm and comfortable as the day I bought it. But I had spilled things on it. And I had two dogs when I bought it that slept with me. And it was just getting old and dirty and time for a new one. Had I known how difficult it would be to replace it, I would have had it cleaned and kept it. But I had no idea that mattresses like that were very rare and (apparently) they don't make them any more. So I gave it away and (tried to) order another one. I was hoping I could just order another memory foam mattress and I would have the same luck. But no! That was two and a half years ago. And I am on my second memory foam mattress that is NOTHING like the one I bought back in the 90's. I am soooo sad about this. The first one I bought felt great the day I put it on my bed, but it was sagging two months later. A year ago my back started hurting. Last summer I threw the thing away and started sleeping on the floor. My back got better, but my body was aching. So I ordered this lucid mattress. It is not bad, but compared to the mattress I had for 20 years, I would call it soft and squishy. I definitely would not call it firm. But the thing that really makes me laugh is the warranty. It doesn't even cover sagging. So I guess I know what to expect after few months, because if it would last for twenty years like the mattress I loved so much, they wouldn't hesitate to make the warranty cover sagging. Apparently it won't be long before I will be putting this one in the dumpster too. And essentially, for my purpose, this one is completely worthless, because what I wanted was a really firm mattress. But this on is NOT firm at all, in my opinion, because I am comparing it to a mattress that was very firm, and remained firm for the entire 20 years that I slept on it. And I only weigh 105 pounds. It is truly a shame that a good mattress is so hard to find. I have looked and looked and I don't see a mattress like the one I bought 20 years ago anywhere. Crying crying crying shame. I am so sad about giving it away.