Designed for high output activities, the Thermal Airshed Jacket from Patagonia features hybrid paneling to provide warmth where you need and breathability where you don't. The PlumaFill insulation replicates the structure of down to create a high warmth to weight ratio that provides the "warm-when-wet" performance of a synthetic. With two internal pocket, one zipping and one open, this jacket has room for the essentials and this jacket has some stretch for ultimate comfort.