I came back and bought a beautiful Jonathan Louis EK bed with a really comfortable Serta matress. I believe it was gel of some sort. I'm a hot sleeper and with these gels, they definitely cooled me off and I was able to sleep through the night. The other cool this is that when it's cold, the mattress was able to regulate and keep my body temperature from droppping. That's just amazing. Their staff is so knowledgeable. I will definitely recommend Furniture USA.