SWD is a merino woolen ski sock from a single-layer felt. The most stressed areas on the tips, toes, shins, and Achilles heels are reinforced with a double-layered felt that forms the attenuation layer before the bumps. The fine tip of the toe and the light hem clip provide great skiing comfort. High wear resistance and excellent thermal insulation properties. The superciliary area is a forward tilt zone.