Sorel Caribou Wool Boot - Men’sOften imitated but never equaled, the original Sorel boot supplies insulation, comfort and waterproof protection in cold and wet winter weather. This upgraded version features the warmth and naturally breathable performance of a 9mm wool inner boot, which is removable so you can adapt to changing conditions. A seam sealed construction with waterproof full grain leather and a handcrafted vulcanized rubber outsole work together to seal out winters