The Millet 7 Summits 14 Degree Down Sleeping Bag is designed and built for high altitude climbing. Its 3D construction increases loft and thermal insulation by utilizing both goose down along the top of the sleeping bag and DownTek hydrophobic duck down along the bottom of the bag. A water resistant nylon fabric provides additional protection from heat robbing moisture. The actual shape of the bag is a standard mummy shape with an anatomic footbox for additional comfort and warmth in cold sensitive areas like the feet. The hood is adjustable for better thermal efficiency, and the baffles feature a Cassion H box baffle construction for enhanced thermal efficiency. The 34 length side zip is backed by a draft tube, and an inside pocket is conveniently located for ease of access throughout the night.