We threw out our OEM mattress after the first 70 day trip( it would have been sooner had we been in one place).. Now 140 days later this one remains comfortable https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
better than my Serta I mattress.
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2021 GMC Canyon
2021 Jayco 212QB
WDH ; Anderson
2012 Honda Ridgeline not towing anymore
2016 195 RB traded in