VA Jim wrote a review of Big Agnes Insulated Air Core REM Sleeping Pad - Mummy on January 11, 2007
I'm 55 years old, with a bad back, so I knew that I needed as much padding as possible. This pad is very comfortable once you get just the right amount of air. I used it all the way down into the 30's with no problem. I also used it into the teen's, but added a closed cell pad for extra insulation.