CraigBwrote a review of Kelty Cosmic Sleeping Bag: 20 Degree Down on September 22, 2012
Familiarity: I've used it several times
I got this bag to do some hiking over the summer since I would be up north in the mountains and the nights were in the 30's and 40's. It worked very well. It really is as light as advertised, but what really surprised me is that I could compress it more than my wife's 20+ bag. I will have to update after I give it a few tries in the winter, but so far I love it.