RIVERET Bamboo mug. I received this as a wedding gift and rinsed it with water once, but I haven't used it and have been storing it in the cupboard. From the RIVERET official website: Diameter 64 x Height 190mm Capacity: Approximately 350ml Set of 2 wooden (bamboo) mugs with a rounded design. Dishwasher-safe. Retail price: 7,480 yen Please refrain from purchasing if you are concerned about minor details, as this item has been stored at home by a private individual.