Gregory Morriswrote a review of Big Agnes Mystic UL Sleeping Bag: 15 Degree Down on January 30, 2017
Familiarity: I've used it several times
I very warm bag, into the high 20's (I have not tested lower). Obviously, you need to have a good pad with any sleeping bag to maintain warmth. My only complaint is that the pad sleeve doesn't come to the top..WTF? ( I failed to recognize that from the pics). Perhaps I am missing something, but I don't see the point. I keep a small pillow in the bag with me. At 6' 1" I might of been fine in the regular but I like to sleep on my side so the bigger bag adds a little girth I believe.