This is a very good rv mattress. The one that came with the rv was basically a huge pillowcase around a foam pad...horrible! This one is a little firmer than my mattress at home, which is a memory foam, so I put a 1 1/2 inch memory foam topper on my side of the bed. I just bought a twin size and cut it down . Now it's perfect. My husband likes firmer mattresses so he was fine without the topper on his side. This was a very good purchase because we stay in our rv a couple of weeks at a time. BTW, don't leave memory foam items in an unheated RV during the cold months. They will eventually harden after repeated freezings . That's why the topper is perfect, because you can roll it up and put it back in the closet in the house during the cold months when the RV isn't being used. Highly recommend this rv mattress.