I have kept this at home unused for a long time. I cannot determine whether the coating on the inside of the sake cups was like this from the beginning or if it has deteriorated over time. ＜Size＞ Black sake cup (gold inside) / Red sake cup (silver inside) Size: Approximately 5.7cm diameter x 4.5cm height Weight: Approximately 38g *Please forgive any errors as this is amateur measurement. Wooden box size: Approximately 7.5cm length x 14.5cm width x 7cm height *The outer box has damage due to aging.