It also has pockets, so you can put in things like admission tickets, exchange tickets, notes, and prayer beads. Since it doesn't have a fastener, you can use it for various sizes of Goshuin-cho (temple/shrine stamp books). (Goshuin-cho is not included) Size: Width approx. 21cm x Height approx. 14.5cm (when folded) Size may vary depending on the Goshuin-cho. The Goshuin-cho size used in the photo is 18cm x 12cm x 1.5cm. If your Goshuin-cho is 17cm or less, you can put two of them in together. Instant purchase is OK!