P-san, Please check and consider this. Thank you for viewing. This is a simple book cover for a B6-size book. It is made of Lilla (pink) from the popular Italian leather MARGOT. MARGOT is leather made from European cowhide tanned with vegetable tannins and has a scratch finish. As you use it, it will develop a patina, and the color will deepen over time. We hope you will enjoy the aging process. ・Product Size (outer dimensions): 36.5cm x 20.0cm The inner height is 190mm. It fits B6 size (height 188mm). Also, it is a fold-over type to accommodate the thickness of the book. MARGOT is 1.3mm thick and has a soft, calm feel, so we hope you will enjoy the texture. ・Thickness of MARGOT used 1.3mm ・Thread Vinymo MBT #5 Color number 16 ・Weight 100g The sixth photo shows a B6-size book with 170 pages and a thickness of 13mm, and the seventh photo shows two books with 270 pages each, with a thickness of 15mm, stacked together to a thickness of 28mm (I think it can handle a little more thickness). The last photo is a comparison photo after aging for about six months. Due to the use of genuine leather and handmade construction, there may be wrinkles and scratches. We hope you will appreciate them as individual characteristics. Especially with Lilla, the color may not be uniform, but we hope you will enjoy it as a unique characteristic. Please check the photos and understand the product. We apologize, but please refrain from comments requesting price negotiations. Color: Pink Pattern/Design: Plain Material: Genuine leather Type: Book cover