Mattress cooler?

[Katodude]

Does anyone here use any type of mattress cooler. The wife has been sleeping hot lately.

I am looking at a Bedjet? Any experience?

 

[pjt]

I have an Eight Sleep mattress. It uses water to heat/cool the mattress cover.

Eight Sleep | The Intelligent Sleep System

Get higher quality sleep with personalized cooling & heating technology for any bed. Sleep cooler, more comfortable, all year long. Clinically-proven.

www.eightsleep.com

It works really well and tracks lots of sleep and other data (heart & breathing rate, etc.). I've also read good things about Bedjet.