Kagawa Lacquerware I think the size and shape allow it to be used as a cup, a bowl, or a soba choko (small bowl for soba noodles). Product Name: Lacquerware Surface Coating: Lacquer Base Material: Natural Wood Colors: 5 colors Diameter: 9 cm, Height: 9 cm Do not use in dishwashers, dryers, microwaves, or ovens. No outer box. It's lightweight.