Updated this season with a refined fit, design lines and a removable, adjustable powder skirt, the Primo Down Jacket features 2-layer GORE-TEX® fabric for durably waterproof/breathable and windproof protection. Traceable Down (from geese traced from parent farm to apparel factory to help ensure the birds that supply it are not force-fed or live-plucked, as certified by NSF, an independent third party) keeps you warm in the harshest elements, from frigid dawn patrol missions to stormy laps in the trees.