PATAGONIA. 84628-BCW. DOWN SWEATER VEST. BIRCH WHITE. The perfect warmth for just about everything our classic Down Sweater Vest is lightweight and windproof with a 100 recycled polyester ripstop shell and 800-fill-power Advanced Global Traceable Down goose down certified by NSF International traced from parent farm to apparel factory to help ensure that the birds are not force-fed or live-plucked .