Measure your mattress before throwing it away. Some sizes are not quite the same from RV brand to household brand. We have a 4" memory foam topper on our mattress that is a king size in someone's mind, but is actually a couple of inches shorter than a standard household king or California king. Depending on your configuration of the bedroom, if the extra height doesn't interfere with any slideouts, and you can get it in the door and up the stairs, then go for it!

We didn't "replace" our mattress, but ordered our Mobile Suites with the Select Comfort RV bed option.  Select comfort has two grades of RV mattresses with one being the premium mattress.  The difference between the premium and the lower grade is the height of the "topper" of the mattress.  The premium has a 2" topper and the lower grade has only 1".  Jo thinks that this RV mattress is even more comfortable that the Select Comfort we used to have in our homes.  Jo and I both swear by our Select Comfort because we each have different needs to prevent back aches.  She sets hers at roughly 45 to 50 and I set mine at 100, and both of us have solved any back aches.

EDIT:  OK.  By "topper," I meant to write "pillow top."  I just couldn't remember the phrase right at that moment.  We did not put any other kind of pad on top or below the mattress itself.

Terry

-- Edited by Terry and Jo on Saturday 4th of July 2015 06:59:39 AM