Hand-stitched genuine leather M5 size system notebook. The approximate size is 13cm (height) x 12cm (width) x 4cm (thickness). The ring diameter is 15mm. The interior features a ring guard, pen holder, and ticket holder. A spring-snap flap is attached, with a pen holder on the inside. The exterior is made of Margot Fog Fragola (red) leather, and the interior is made of Tochigi Leather's natural color. The description of the Margot Fog leather is from Kawamura Leather's website. The Tochigi Leather used for the interior is a high-quality domestic nubuck leather. It is produced using the traditional pit tanning method, which requires a lot of time and effort. The natural nubuck leather will turn to an amber color as it ages. Both are sturdy and high-quality leathers, so I hope you will take care of them occasionally and enjoy the aging process for a long time. The following is an excerpt from Kawamura Leather's website: About "MARGOT FOG" leather This leather is made by Virgilio Conceria Artigiana, located in the Ponte a Egola district of Tuscany, Italy, and is a waxed version of our popular "MARGOT" leather. By applying wax and then scratching it, the unevenness is further emphasized, resulting in a more unique and impactful finish than "MARGOT". As for its physical properties, it is vegetable-tanned, dye-finished leather with plenty of oil. The white wax on the surface penetrates into the leather as it is used, giving it a unique luster and changing to a deep color. You can enjoy the aging process. About the aging of "MARGOT FOG" As you use it, the white wax will become glossy and transparent, changing to a deep color. *Please note that there are some minor scratches on the leather from the hardware installation. *This item is also listed on other sites. If it sells out quickly on another site, we will cancel the order. Please understand. *The product includes the notebook itself only. The refills and pens in the photos are not included.