I had always slept on a memory foam mattress but they made me very hot and I had disturbed nights sleep. I thought it time to change and so tried a hybrid mattress thinking it would be cooler but it was like sleeping on a jelly with so much movement. This was exchanged with ease and very helpful Wayfair staff. I now have the Silver Deluxe Memory Foam Mattress after reading the good reviews and what a difference, keeps me cool and is very comfortable and supportive.