Steve wrote a review of Big Agnes Insulated Air Core Sleeping Pad - Mummy on April 6, 2009
I have only used this once now and it was about 20-25 degrees out. I was not cold at all nor was I sweating buckets. It fit perfectly inside my BA bag and I really like this pad becuase I can just leave it inside the bag if I so choose and stuff the whole thing in a stuffsack becuase putting it inside the bag is really the worst part. It is light as heck, plenty warm, and comfortable as all get up.