When \'light and fast\' likely means \'wet and cold,\' reach for serious core warmth. Our soft, featherlight Puffball adds heat, whether used under a shell or as an outer layer. The polyester shell resists wind and snow; the slick ripstop nylon lining slides easily with layers. It compresses into one of two zippered handwarmer pockets. Imported. Puffball Vest (Unisex)