If you're looking for one bag and one bag alone your search may have come to an end. Western Mountaineering designed the Antelope MF Sleeping Bag with versatility in mind by insulating this 850-fill down bag using continuous baffles. The continuous baffle system means you can push the down to the topside of the bag during those cold nights in the Sierras or to underside of the bag when you're sleeping out under the stars during an early autumn trip to the Grand Staircase.