Andes Wool Crewneck SweaterThis men's wool crew neck sweater features wool harvested from animals in the upper elevations of the Andes mountains in South America. It's wool offers excellent warmth for layering. Made using thick sheep wool sourced from the Andes Mountains at altitudes of over 3,800 to 4,800 meters. The harsh, dry environment and extreme temperature differences result in wool that is voluminous and resilient for an extra warm, durable material. We only use wool