The Obermeyer Men's Kinetic Down Hybrid Ski Jacket evolves the down jacket concept in two major areas. Stretch AND breathability is added my strategically placing a four way stretch hard face fleece fabric. The underarm is constructed with one piece to offer Fusion Fit mobility for those demanding all mountain days. The 800-fill power super light weight down offers optimum warmth with very little weight. A down jacket designed for a full range motion and all day activity.