New, Unopened, Unused Sanrio Bonbon Drop Stickers - Set of 8 The stickers are not hollow; they are a hard type of sticker! Limited edition, so get yours quickly ⁂ Bonbon Drop Stickers Uruturu Pop Stickers Water Stickers Oil Stickers Pukpuku Stickers Pukkurii Stickers 3D Stickers Three-dimensional Stickers There may be some bending or misalignment on the backing card. Please purchase only if you understand and accept this.