Thank you for viewing. This is a simple book cover. It was made from COBALT (blue) of 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, the color will deepen and develop a luster over time. We hope you will enjoy the aging process. ・Product Size (outer dimensions): 30.0cm x 15.8cm The inner height is 150mm. The height of paperback books varies depending on the publisher. It supports paperback books with a lower height (smaller size) (e.g., Kadokawa, Kodansha, Iwanami) size (approx. 148mm in height). Also, it is a folding type to accommodate the thickness of the book. MARGOT is 1.3mm thick and has a moist and calm feel, so we hope you will enjoy the texture. ・Thickness of MARGOT used 1. 3mm ・Thread Vinymo MBT #5 Color number 18 ・Weight 61g The fifth photo shows a Kadokawa Bunko book with 380 pages, and the sixth photo shows a Kodansha Bunko book with 480 pages. Also, the color of the leather in the upper left part of the first photo has changed slightly (aging has progressed?), so the price has been reduced accordingly. ※The last photo is a comparison photo after aging for about six months. Due to the genuine leather and handmade nature of the product, there may be some wrinkles and scratches. Please check the photos and understand this before purchasing. We apologize, but please refrain from comments requesting price negotiations. Color...Blue Pattern/Design...Plain Material...Genuine leather Type...Book cover