I got this for our queen size bed. It went beyond my expectations. It is a waterproof mattress protector. I was blown away. You would have no idea. It was so comfortable. Also, it has 10 different heat settings. It allows you to match your perfect comfort zone. There is an automatic shut off so you don’t have to worry about forgetting to shut it off. I was so impressed I plan on getting one for every bed in my house.