Everything I expected
This is a very well made bag. I really can't believe how comfortable (and warm) it is. I have never used a "sleep system" of bag and pad before (besides large air matresses while car-camping), and I love the weight savings you get from the "bottomless" bag. They are right about everything; you carry less weight, get more comfort, and get more warmth with their system. I highly recommend the Big Agnes bags!