Patagonia Men's Down Shirt Black Lightweight, windproof 100% recycled polyester shell and liner fabrics have a DWR (durable water repellent) finish Traceable Down (third-party-verified, non-live-plucked, non-force-fed) 600-fillpower goose down is stabilized with a narrow quilting construction Center-front vislon zipper with internal storm flap and chin guard Two external drop-in handwarmer pockets are set into the forward side seam Two internal drop-in pockets are created by the external hand pocket construction