David S.wrote a review of Marmot Phase 20 Sleeping Bag: 20F Down on November 8, 2017
Familiarity: I've used it several times
I agree with the two reviews below. I've used it a total of four nights and the final two of four were without a zipper. It often snags and it completely detached from the teeth strip.
Regarding temp, I purchased a liner, one because I didn't really like the feel of the inside fabric against my skin but two to give it some extra heat. Generally dissatisfied with such an expensive bag. It does compress well.
Backcountry did well by me when dealing with this.