Outdoor Research Peruvian Hat is perfect for those cold winter days when you want to be outside enjoying the snow, but not at the expense of your ears. This hat features GORE-TEX INFINIUM with Windstopper 3L 100% polyester microfleece for windproof, moisture-wicking breathability and an adjustable chin cord to ensure a secure and comfortable fit through gusty winds. For windy, cold-weather days spent traveling outdoors, the Peruvian Hat is the ultimate in cold-weather headwear.