I believe this is a non-sale item from a Twitter giveaway (limited to 250 people?). It's a collaboration pouch between the comedy duo EXIT and the Korean cosmetics brand TIRTIR. It was unused and unopened, but the bag was dirty, so I opened it for the photos and disposed of the bag. It seems to be made of enamel, and there was some oil on it, so I wiped it lightly with a dry cloth and tried not to leave fingerprints. There's a glossy look characteristic of enamel (patent leather), and some slight discoloration from age. Since it's unused, the inside is of course clean, and the zipper works smoothly. The size is about 13 x 17 x 5 cm. It doesn't have any stuffing and was already a bit squashed to begin with, so I think I'll send it by post!