This sock style is a LIGHT Merino Wool. Known as a natural wool of the highest quality, obtained from Merino sheep. Merino yarn is exceptionally soft and therefore provides a high level of comfort. These socks have an inner layer of dry lining combined with an outer layer of merino wool that provides excellent thermal insulation in cold winters and warms up your feet. Regardless of the type of physical activity performed, wool insulates and regulates the temperature. It allows you to stay warm in frost and simultaneously remove moisture, leaving your feet dry for longer. Merino wool perfectly separates moisture from the skin - its hygroscopicity is the highest among all fibers, and it is known for its high quality and durability. Merino wool significantly reduces the unpleasant smell that arises due to the deposition of sweat and is very soft. Merino fibers are extremely thin and resilient.