iam an adviser to a company called bright, which is b r y t e. It uses temperature augmentation and pressure augmentation. I like the form factor of the mattress as a way to potentially architect better sleep at night. If you have cold hands and cold feet, it's very difficult to fall asleep. The blood gets locked into the core of your body so you can't expel the heat. So trying to do local warming of these highly vascular areas called the feet and the hands. And of course, most of us will stick our head outside of the covers too. Our head is a place where we lose, or we can lose, and radiate out a lot of heat