Keep your head toasty and warm during all your outdoor explorations with the Columbia Thermarator Hat. This classic-cold-weather cap is constructed of 280-gram, 100% polyester Thermarator fleece fabric. Omni-Heat thermal reflective technology helps regulate temperature by reflecting and retaining the heat your head generates, while dissipating moisture and excess heat. An embroidered logo at the base lends distinctive Columbia styling. Imported.