A fully waterproof and sherpa-lined ear warmer cap featuring signature Aquasealz™ technology to combine complete waterproofness with breathability, letting excess heat and perspiration escape. The heavy-duty design for the colder months includes a soft, insulative sherpa fleece lining, versatile ear flaps that can be fastened up when not in use, and a foldable peak for easy packing, finished with an adjustable buckle clip and a Sealskinz rubber hiking badge.