The Millet Women's Hybrid Wool Langtang Jacket combines the temperature regulating properties of wool with the unbeatable warmth to weight ratio of down. The jacket's hybrid construction combines a top shelf three layer shell with a DWR finish at the hood, sleeves, and underarms for protection against the elements, and it is backed with a wool blend backer for effective insulation. The body of the jacket is insulated with a hydrophobic down fill for exceptional warmth and is held in place with a lightweight Pertex Quantum fabric that allows the body of the jacket to breathe. The Alpine Fit is slim fitting for easy layering and minimal bulk when worn on its own. The tall protective collar is insulated for additional warmth and works in concert with the waterproof hood to keep your head and face warm and dry.