The wool used in Royal Tibetan rugs is 100% highland Tibetan wool, the rarest and most durable wool. This wool comes from Tibetan sheep that are indigenous only to the high plateaus of the Himalayan Mountains. In such harsh climate, a sleep creates a wool fiber that is extra long, extremely durable and highly saturated with lanolin. The lanolin produces a natural strain resistance and keeps the wool from drying out over the years. It also creates a beautiful, rich patina as the dye soaks into the wool. It creates a natural lustrous, yet soft and subtle variation in color.