It doesn't do what it promises regarding heat and sweating. It made no difference for me, and nothing changed with the heat. Regarding the protection of the mattress, it does what the others do, which are probably cheaper. Wasted money; if I could, I would return it.

I have a very good and high-quality mattress protector, but I used to sweat a lot during the summer. Although this specific one had no reviews, it was the only choice for the summer.
It's worth it! It can't be a coincidence that since I put it on, I stopped sweating during sleep, under the same conditions in the room. After a month of use, now I will also buy the pillowcases