The North Face's warmest down bag; the Inferno has been designed for expeditions in the world's coldest environments. Premium quality 800-fill European goose down provides optimum compressibility and warmth-to-weight, while the use of Polarguard 3D insulation in high compression areas maximizes support and thermal efficiency. The Inferno utilizes a durable Shadowlite HyVent shell to provide an effective barrier against water penetration. This bag will be there for you when the weather starts to hurt. Available in right hand zip only.