Cashmere goats grow the fiber accordingly to the climate they live in. As they tend to live in extremely cold conditions, their fiber is finer than any other fibers such as wool. Because it’s super fine, natural, and breathable, in the winter the insulating nature allows the body to keep its warmth, and in the summer, does the reverse by discharging the perspiration as vapor. The heat generated by the friction made between skin and cashmere has a good effect on blood circulation.