A particular breed of goat that is endemic to the Gobi Desert and Central Asia produces hair that is used to make cashmere, a form of wool. Cashmere has long been regarded as one of the softest and most opulent varieties of wool in existence and is widely sought for use in sweaters, scarves, and other lightweight cold-weather clothing.
Although cashmere is less insulative than other forms of wool, it is softer and finer, allowing for the creation of extremely dense yet thin fabrics. Although it won’t insulate you as well as typical sheep wool, this sort of wool is soft enough to wear next to the skin, making it useful for undergarments and undershirts.