Mattresses

Mattress we've had in our TC for 10-11yrs is also our guest room mattress. I fold it and bring it in after each trip. It's a 4" thick, firm 100% latex rubber (Not "contains" real latex, but it's an actual real latex foam- very important distinction). It was $129cdn from IKEA!!!!! Queen size. Blood amazing! Firm but not too firm. I never create a crater in it that my wife would roll into. Warm(with foam board under the mattress)
If the mattress is S**t in the new camper, I'll put the good old IKEA one in there.
Likely one could find one somewhere. IKEA doesn't sell this particular one anymore, but they have others if you're looking for a good mattress at a cheap price.