| We had good luck with mattress topper
We bought 2" Memory Foam topper from Overstocks.com for Rear Queen bed in our trailer.. I believe it was 4 pound rating (comes as 3 or 4 or 5..). Trimmed to fit including curved rear outside edge, and used excess for padding in gap between mattress and wall now, and it works well...
Might be more of a challenge with folding sofa bed, as you'd need to store during day use... A 5 pound foam in 3" thickness would almost be equal to new mattress...
__________________ Condoluminum In Theory, there's no difference between Theory and Practice, but in Practice, there is usually a difference...  |