I have posted in the past here but will restate some issues I have to deal with. For starters I am considered morbidly obese. No I do not sit on my tail eating twinkies all day. I've got spinal issues and a metabolism that went to hades as soon as I turned 30. I am under a doctors care and working on the issues, trying to avoid surgery. But for now, I need a sleep system that will support my back properly, AND put up with my weight.
My wife and I love to camp and travel as it ramps activity way up while keeping pain more or less at bay.
For MY situation, I use an instant up cabin tent, with a poly tarp under the floor after throroughly checking the tent pad sit to make sure no pokey things.
Once the tarp is down, the tent is up, I lay down an RV mat INSIDE the tent to separate the floor from the bed. The Tent floor is 10x14, the RV mat I think is 9x12 so not a perfect fit, but it works...
Next I use a pair of heavy duty, 550lb capacity rated twin double high air mattresses by Etekcity. I have a king fitted sheet that binds them into an effectively split king. I also carry a spare mattress and patch kits just in case... And I have a Coleman 4D pump for being off grid when I can't use the built in pump...
With the shelter and beds set up, time to put bedding on. Typically I use a layered approach based on a pair of Coleman King sized sleeping bags, and about 4 king size mexican blankets bought at various points through Mexico. If I recall right, Nuevo Progresso, Cancun, somewhere else in Quintana Roo that I simply don't recall. We stopped for lunch going to Xcaret... and I think the last, well actually first since I am going in reverse chronology, Nogales...
If you don't have Mexican blankets, I encourage you to go buy them the old fashioned way. In Mexico...
But I digress...
The mattress for my side has to provide more support so I pump it up almost as firm as it will go. My wife likes her side squishy...
For anything over about 68 degrees I actually use just a flannel flat sheet for a blanket. Kind of the same thing I do at home...
And yes I DO bring and use a pillow. I've got a basic memory foam rectangle pillow, not one of those funny curved ones, that I use for my lower back on the drive, and it works great for at home...
MY DREAM SYSTEM:
For me, I want to build a custom wide camper shell / platform bed that will handle a king size mattress, and an 8" RV short king Memory foam mattress (F150 with a 6.5 foot bed). Again actual sheets and my Coleman sleeping bags / Mexican blankets. There is a theme going on here...