Meiji Original Pocket Monsters Diamond & Pearl Sandwich case. It's foldable, so it doesn't take up much space. I think it can also be used as a small item case. Size: 13cm (H) x 10cm (W) - Design: Pocket Monsters (Pikachu and Mimikyu) - Color: Yellow - Type: Storage box It has been stored at home and opened, but it is completely unused. Thank you for looking.