Yakusugi is a type of cedar that grows naturally in the mountains of Yakushima at an altitude of 500 meters or more. Trees that are over 1000 years old are called "kosugi" (small cedars). Leather dyed with Yakusugi grown in the great outdoors of Yakushima exudes the strength and gentleness of the majestic life that resides in its color. The dye is made from scraps from furniture production and Yakusugi leaves, and is boiled over many days using a unique technique to extract the color that lies deep within the Yakusugi.