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 16.3cm The inner height is 154mm. It supports the tall paperback size (height 152mm) from major publishers. Also, it is a folding type to accommodate the thickness of the book. MARGOT is 1.4mm thick and has a slight firmness, but it is a soft and calm leather, so we hope you will enjoy the texture. ・Thickness of MARGOT used 1.4mm ・Thread Vinymo MBT #5 Color number 18 ・Weight 66g The fifth photo shows a Kodansha Bunko with 380 pages, and the sixth photo shows a Bunshun Bunko with 580 pages. ※The last photo is a comparison photo after aging for about six months. Due to the genuine leather and handmade nature, there may be slight wrinkles and scratches. We hope you will enjoy them as individual characteristics. Please check the photos and understand. Shipping will be folded and sent via Yu-packet Post Mini. We apologize, but please refrain from comments requesting price negotiations. Color...Blue Pattern/Design...Plain Material...Genuine leather Type...Book cover