This is a small case from CHUMS. I used it to hold my smart key, so there's almost no dirt or stains. I think it can be used for a coin case, earphone case, etc. Please purchase only if you understand that this is a used item. Size: 11cm x 6cm x 2cm (measured by hand) CHUMS CHUMS Small case Small pouch Coin case Coin purse Earphone case Smart key case Medicine case