Thank you very much for viewing! This is a "Baby Danone/Petit Danone Miniature Keychain - Plain Flavor" gachapon (capsule toy). It was a limited edition item from the capsule toy specialty store "#C-pla". The size is approximately 2.7 cm in length and width. I am selling the duplicate I kept. :) I am sorry, but please refrain from price negotiations. (>_<) Since it is unopened, if there are any initial defects, please contact the manufacturer. If you are concerned about minor details, I am very sorry, but please refrain from purchasing. I will send it in an envelope using recycled packaging materials. I am not used to selling on Mercari, but I will do my best to ensure a pleasant transaction. Thank you for your understanding.