I just got a sleep number bed with cooling gel but wanted a mattress protector to keep it nice. After all, it was an expensive bed. I loved the cooling gel in my mattress and didn't want to lose this feature so I was really happy to find this pad. Unfortunately, it doesn't work as advertised. The pad itself is very well made and fits my extra thick mattress perfectly but it not only negates the cooling gel in my mattress but doesn't seem to decrease body heat on its own. As just a matress pad, 5 stars, as a way to decrease body heat 0.