This is a sake cup purchased at the Banko-yaki pottery fair. The inside has a mirror-like shine and is very beautiful. I bought too many sake cups, so I'm reluctantly putting this one up for sale. - Color: Black and silver gradation - Design: Striped pattern - Bottom: Smooth bottom - Gloss: Glossy finish Dimensions: Diameter 6.5 cm, Height 3 cm I hope you enjoy drinking sake from it. I sincerely look forward to your purchase.