This is a set of two sheets of Kuromi's Bonbon Drop stickers, not sold in Japan. The stickers are not hollow; they are a solid, hard type. This is an official overseas exclusive product from Arishfish (阿里魚), which has a licensing agreement with Sanrio. Sold separately for 850 yen each. *Please note: There may be printing misalignments, variations in adhesive strength, and package creases. Also, a product management code sticker is affixed to the back of the backing sheet. If you are concerned about minor details, including the backing sheet, or if you are looking for a perfect product, please refrain from purchasing. m(_ _)m #OfficialLicense #AuthenticProduct #Uruturu (glossy/smooth) #BonbonDropStickers #HardType #3DStickers #DimensionalStickers #PukpukuStickers (puffy) #Bondro #Bonbon #StickerExchange #RewardStickers #Kuromi #Sanrio