mattress topper?

We threw out the OE mattresses and replaced them all with memory foam. The queen we bought is linked below and it's extremely comfortable. I'm not sure how well it would hold up in a home where you're sleeping in it every night, but for occasional use in a fifth wheel I think it'll last a long time. Well worth the $200.

https://www.amazon.com/gp/product/B00Q7EV29G/ref=oh_aui_search_detailpage?ie=UTF8&psc=1