I was pleasantly surprised by just how comfortable and cool this mattress topper was. When I first unrolled it let it fluff up it seemed like it might be too thick and I might sink in too much, but after sleeping on it that did not happen. I did sink in a bit but only so much as was comfortable, so there is actually good support. And the best part is how cool this slept. I have tried other supposed cooling memory foam toppers but this one actually slept cool. I did not overheat once and normally I wake up at least once a night from overheating. Overall, I am very happy with this mattress topper!