The 6” height worked well for our teardrop camper. Probably could have fit a taller one, but it’s comfy enough as is! Best for back sleepers, but I slept just fine as a side sleeper. Didn’t feel the floor below. Excellent support for the size. It did take a bit longer than the 72 hrs to fully expand, but I had the time to wait so I wasn’t bothered by it.