We have had no issues with moisture, but when we got our new mattress a couple months back, we did get it cut 1" smaller on all sides (2" each way), to better facilitate tucking in sheets. We got a 6" firm foam, with a 2 1/2" latex foam topper. Heavenly to sleep on.
2017 Escape 5.0 TA (someday soon, I hope
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
“Most folks are about as happy as they make up their minds to be.” — Abraham Lincoln