Sleeping problems in Travel Trailer

We have a shorty queen, had a special-order done in Portland, Maine .. had to wait a couple or three weeks, but so worth going into a 'factory', picking out the mattress we wanted, had it delivered, swapped and took old mattress away.

Now sleep without pain. Yes, it does weigh more than the "came with the unit mattress", but so much better, and we tried all the suggestions, foam, etc. suggestions here, but the new mattress was the only 'cure' for me & my upper back.