Although comfortable (we went with the firm), this bed is not cooling, both me and my husband have been tempurpedic users for over 20 years, and upgraded to this mattress because of age and hot flashes throughout the night. We honestly couldn't tell a difference in the cooling aspect of it, which we would have stayed with our Cloud Mattress (more comfortable) and bought the Ooler cooling machine (which we still ended up having to buy - and it's a game changer for temperature).