North Face's warmest expedition down bag, the Inferno will be the ultimate bag for the most extreme expeditions. With a lightweight, waterproof, breathable outer shell, high quality 800-fill down insulation, and a burly draft collar, this bag is a true provider of warmth. Other features include glow in the dark zipper pulls, a welded shoulder level zipper pocket, single-point cord lock adjustments, and zipper garages.