Hologram stickers. Can also be used as sticker backing paper. (※Thick stickers like Bonbon Drop stickers can be peeled and re-applied many times, but thin paper stickers are quite difficult to remove.) Perfect for A6 size binders. No holes are pre-punched, so please use a hole punch. You can also cut them to your desired size. These will be shipped in an envelope as is. If you would like reinforcement with cardboard, it is available for an additional 33 yen.