I was a little unsure as I opened this pillow. I have used the same pillow for many years. I have had some neck aches, but I chalked it up to getting older. I will tell you that I have been using this pillow for over a week now and have had zero neck issues. The pillow is a little bit wider than a regular pillow. My head doesn’t get hot and I feel like the pillow  stays the same temperature. It has a cover on it which is washable and I posted a picture of it with the cover and without. You can see that it has small holes in it which I think is what regulates the temperature. It is a firm, but squishy pillow like memory foam. I think it gives good support which is why I have not had any neck issues. I was not sure if this pillow would work, but I am happy to report it is here to stay! I’m loving it!