These natural wood chopsticks are made from tangerine trees with a smooth beeswax finish. The tangerine orange tree is native to the Philippines and South east Asia, and has since spread to Japan, China, India, and Australia. After use, wash with water and a soft cloth. Because of the natural wood finish we do not recommend placing it in direct heat or very hot water. The chopsticks have a base of Tangerine Ctirus (Rutaceae Juss.,), harvested in China. They have a natural beeswax protective finish. These chopsticks are 9 inches long. Made in Japan.