This is a Starbucks mug. It is made of Bizen-yaki pottery. Product Name: Starbucks Okayama Limited Edition Mug Bizen-yaki SANGIRI [JIMOTO Made] Mug Bizen-yaki SANGIRI 355ml Condition: New, Unused ⚠️Everything in the photos is included. JIMOTO Made is a limited series that incorporates materials and techniques from all over Japan and is only available at local stores. Each Bizen-yaki mug has a unique color and pattern. Bizen-yaki is one of the six ancient kilns (Rokko-yo) that have been around since ancient Japan. Its main feature is that it is fired slowly with the flames of pine wood, without using any painting or glaze. The design has a rounded silhouette that is inspired by coffee beans. The handle has a modern design and is delicately crafted, and the "lightness" you feel when you hold it is also a characteristic. The body is made as thin as possible, giving it an impression that is easy for anyone to hold.