We designed the Ambient Jacket to be durable, packable, and most of all, adaptable to changing weather conditions and levels of activity. Utilizing low-bulk PrimaLoftA(R) Evolve active insulation, this jacket delivers plenty of warmth when you&';re still, breathes well and manages moisture when you&';re moving and dries quickly if it gets wet. Ideal under a shell during cold weather hunts, on its own during brisk spring and fall evenings in camp, or tossed into your pack for summertime backpacking trips into the high country, there&';s never a time when you don&';t need this. Features:- 20D ripstop nylon fabric is built to take a beating 150 grams post-consumer recycled PrimaLoftA(R) Evolve active insulation for breathable low-bulk warmth Mechanical stretch enables a wide range of motion Durable water repellent finish sheds moisture and keeps fabric from wetting out Zippered hand and chest pockets provide secure storage Total weight: 18 oz.