I'm not sure what you mean exactly....BUT i have a thermoplush select. I have a bad back, and have never slept better. You don't need a boxspring with memory foam, so it's ideal for a loft - will...

Oh- just because I read above about chinese mattresses and stuff- the thermoplush is made in america.

I have a thermoplush select and love it. It's VERY firm, but the top layer is a little squishy. I think it feels better than all the tempurpedics I tried. AS for sex, it takes some getting used...