For years, I have woken up in the middle of the night from being too hot and sweaty. This is the first mattress I've ever owned that keeps me cool through the night! Even with the summer heat kicking in, my mattress stays cool when the room gets toasty. You can tell just by looking at it how high quality the materials are and the black color looks super sleek. My one, small issue has been that I have been waking up with tight hips and lower back. Nothing major, just noticeable. My previous mattress was firmer than this one and I think I may still be sleeping in curled up positions that I needed to be comfortable on that mattress. I'm confident that I will get used to the mattress because the amount of support is great, I just need to learn to sleep in a better position so it supports me correctly. 4/5 only because there has been a bit of an adjustment period that I didn't anticipate.