Packable synthetic vest that insulates even when wet. Insulated with 60g PrimaLoft® Gold to offer our highest warmth-to-weight ratio, the packable Filson Ultralight Vest provides versatile comfort solo or as a mid-layer when the temperature dips. Features a durable 1.5-oz. ripstop nylon shell, soft Moleskin-lined collar and handwarmer pockets.