Cold-weather Activities Dont Have To Make You Cold. Not When Theres Merino Wool Out There! Keep Your Noggin Toasty With The Isto Retro Beanie, Made With Heavy Cable Knit Construction. It Blends Merino Wool With Recycled Nylon, So Its Soft, Warm, And Durable. A Triple-shaded Hat With A Ribbed Cuff For Stay-in-place Comfort, This Beanie Will Look As Good As It Feels. Whatever Your Next Outdoor Adventure Brings, Youll Be Ready To Meet It.