Zip up the Premonition™ UL Jacket and into the alpine mindset. Pertex® Shield protects you from the elements while remaining slight on the scale and in your pack to deploy at the drop of a hat when it's time to take cover. When the trail gets steep, open up the underarm vent snaps, and when steep turns steeper, harness-compatible zippered hand pockets ensure you can reach your life-saving GPS tracker.