Hi all, here is my custom cushion setup in addition to GFC sleeping pad for added comfort. The point for me was “custom, but reasonably priced and availability & durability in mind”.
Walmart queen size 2” foam mattress
Basic mattress and just cutter to 47” width to make sure GFC tent fold in with zipper on both sides
Covers&all water / mold resistance outdoor cover
Water, mildew, mold resistance, just use this cover and replace the foam as needed
Maybe $200 total
Here is the Cover&all website for your ref. All in all, it looks like extra sleeping pad came with the camper!