When I planned to try to simplify my shelter and sleeping system by moving to the ground there were a few challenges. The first being that I hated sleeping on a thin closed cell foam mat. I did not get much cushion and ended up with a sore back. So when I started to look at pads I knew an inflatable was where I needed to be. The Xtherm has a 2.5 inch loft and does quite well in keeping my back in the proper shape. So far my only concern is the Regular size is only 20 inches wide and my arms sort of fall to the ground. I may have to return it and get the large which is 25 inches.