I'm pretty happy with this mattress. After a car accident over one year ago, I've still been waking up with extreme back pain. I decided to try this mattress. Great idea! I don't always wake up in pain anymore, just some days (likely due to my daytime/work activities). It's supportive and comfortable. It does sleep a bit warm under my winter down duvet, but not too bad. My only concern is that it softened up SO much after a couple weeks that it might get too soft. I'm only 100 pounds, so if a heavier person sleeps on it, I imagine it could take away some of the support and soften too much. I'm speculating. We will see. For now, I'm happy with my purchase.