We told the dealer to keep their mattress and we went out and bought a Serta queen to put in there. The company we bought it from even installed it for us as long as we brought it to the store parking lot. Not a problem! We even tried to put the mattress topper but found out it was to soft then so it went under the mattress to give us a little more insulation from the cold air that MIGHT be there from the slide being out. I don't remember the exact number or name of the Serta but it was not a pillow top. We really like it and we both sleep like babies on it!
