I just made a new corner bed for my 21ft Sovereign
. Started with Wal-Mart 8" memory foam Spa Sensations mattress. Spa Sensations 8" Memory Foam Mattress - Walmart.com
It was about $160 including shipping and tax.
I opened the zippered cover and sliced open the inner netting. The three layers of foam cut very easily with a disposable razor knife from Ace Hardware. Tucked the netting back and zipped the cover back in place. Then laced the back to pull in extra fabric left from cutting the curve and 4" off the side. One of these days I will get my Singer out and sew it properly.
This bed is as comfortable as my $2,000+ memory foam mattress at home. For those of you not familiar with a memory foam mattress it does take a bit of getting used to, I have heard 'like sleeping on wet cement' more than once. I think it is the greatest sleep I have ever had.
I am going to try to add some pics here, but if I cannot, I did get them to post on my profile on the Airstream Registry.
Sweet dreams to all.
Can't figure pic thing out, sorry