This is a book cover for a Japanese "shinsho" size book. The front has a floral pattern, and the inside has a polka dot pattern. The following sizes are compatible: Shinsho size: 18.2 cm tall, 10.3 cm wide BL novel shinsho size: 18.2 cm tall, 11.5 cm wide Also, although there will be extra height, Comic size (shonen manga, shojo manga): 17.6 cm tall, 11.3 cm wide can be used if you don't mind the extra material. Shinsho size: 17.4 cm tall, 10.3 cm wide can also be used in the same way. However, B6 size and A5 size are not compatible. Photo 4 shows a shinsho size book (only a BL novel is available, so it's photographed with a BL shinsho book), and photo 5 shows a comic size book. The cover size is approximately 20 cm tall and 32.5 cm wide. Adjustment is possible depending on the thickness of the book. Each item is made carefully, but it is handmade by an amateur (with imperfections in the stitching and slight misalignments), so please understand this before purchasing. I am also selling on other apps, so I will delete the listing if it sells.