Thick sleeping pad recommendations?

[Wheels]

I've been trying to get my wife into overlanding with me, but she isn't a fan of waking up with a sore back from sleeping on a thin sleeping pad.  I see several out there on the order of 4 inches or so, but very few have reviews.  I'd like to use this on the ground at first, and eventually maybe transition to a roof-top tent.

Any suggestions?

[jloha312]

I personally use a Sea to Summit inflating and I'm a side sleeper. I used it for a week sleeping on the ground at a Scout camp in NH and it was super comfortable. https://www.rei.com/product/120235/sea-to-summit-comfort-plus-si-sleeping-pad

I also ranked the warranties of sleeping pads on the following site as I was trying to figure out which pads have the longest warranties. http://trustfuss.com/search?Category=205