I once had it sandwiched in a smartphone case. (There was space inside the case, so it wasn't in direct contact.) The sticker has not been peeled off. There are slight scratches, which are difficult to see. Only those who are okay with this, please. Water resistant ◎ Light resistant ◎ Size: H73 x W65 x D1mm or less (varies depending on the character) Material: PP (water resistant, light resistant) Made in Japan #chiikawa #sticker #seal #ministicker #miniseal #waterproofseal #lightproofseal #waterproofsticker #lightproofsticker