Our all natural baby alpaca crew socks are made from 80% baby alpaca with 15% nylon and 5% spandex added for durability and shape retention. Our alpaca crew socks provide the ultimate in comfort and are extremely soft. As with all our socks, these are made in the U.S.A. Being knit from a natural fiber, they naturally wick away moisture, keeping skin dry and cozy. This special wicking ability keeps you warm in winter and cool in summer. Theses are flat knit construction, which makes them a lightweight sock. They fit easily in dress shoes or any shoe comfortably, yet have all the advantages of natural fiber. All our socks are designed by a podiatrist to assure you receive the best design for comfort and foot health. Care instructions- Machine wash in cold water and air dry.