I just got my 4" king mattress of memory foam. I have the retractable bed and it works great with the foam mattress on top of the GS mattress. Can't wait to use it, picked it up at Overstock but Costco and Wally World have them in any thinkness. Pal of mine says its the only way to sleep.
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2007 42' Friendship Quattro
2007 Liberty Toad
No Rodents
Kids raised and only barrow money
400 Cummins Bad Milage
Prices ranged anywhere from 79.00 to 300.00 depending on what size and the thickness of the mattress. I paid 162.00 delivered for a 4' king size with two pillows (about the same as costco) but it was 100% foam.
I noticed when I was looking that some were 4", 1 1/2" foam and 2.5 inch microfiber. The one a costco was this way along with most of the other at 4" . Its best to look around Target, Wally World, Shopco they all have them.
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2007 42' Friendship Quattro
2007 Liberty Toad
No Rodents
Kids raised and only barrow money
400 Cummins Bad Milage