This is "Picchin," a clear coating film (book cover) with strong adhesive. It is a product sold by H.S. Co., Ltd. and is used in public libraries for book protection. Uses: Protects books, photos, drawings, etc. from water, dirt, and scratches by applying it to them. It is a transparent film with a strong adhesive. It can be widely used at home, in the office, and at school. Made of polypropylene, it does not yellow or become brittle like cellophane tape, and maintains its beauty. The backing paper has guidelines for convenient cutting. Size (this package): Bunko-bon size, with product number 01008. This product is very useful for making important books last longer. Label stickers, 10 sheets, that can be cut freely at home or school. Size: 19cm x 26cm I purchased this six months ago. Thank you.