Andrew Christensenwrote a review of Western Mountaineering Antelope MF Sleeping Bag: 5 Degree Down on January 28, 2017
Familiarity: I've used it once or twice and have initial impressions
It's like being hugged by a marshmallow and is packed with convenient features. One example of this is the draw string for the neck baffle is elastic which makes it easy to scratch your face without readjusting anything.
I wanted to see how the bag performed by itself. So I spent a night in it with only a pad. The lowest I saw the temperature get was -2 degrees throughout the night. I did end up putting my down jacket on to stay warm but didn't have any problems after that.