At 73 years old and having purchased several mid line mattress in my life, this far exceeds anything that I've had, but there's one thing that could be better, and that's the edge support, at 210 lbs when I sit on the mattress edge, the upper layer's bottom out, and when you first sit on this,it seems like it's going to be too soft, but when you lay down it's the best support from a side sleeper.