Thank you for viewing! This is a simple book cover. It's made from COBALT (blue) Italian leather, MARGOT. MARGOT is leather tanned with vegetable tannins from European cowhide and has a scratch finish. As you use it, the color will deepen and develop a luster over time. We hope you enjoy the aging process. ・Product Size (outer dimensions): 30.0cm x 16.2cm The inner height is 154mm. It fits most major publishers' tall paperback sizes (152mm high). It's also a fold-over style to accommodate the thickness of the book. MARGOT is 1.3mm thick and has a soft, calm feel, so we hope you enjoy the texture. ・Thickness of MARGOT used 1.3mm ・Thread Vinymo MBT #5 Color number 18 ・Weight 65g The fifth photo shows a Kodansha Bunko book with 380 pages, and the sixth photo shows a Bunshun Bunko book with 580 pages inside. ※The last photo is a comparison after about six months of aging. Due to the genuine leather and handmade nature, there may be slight wrinkles or scratches. Please check the photos and understand before purchasing. We apologize, but please refrain from comments requesting price negotiations. Color: Blue Pattern/Design: Solid Material: Genuine leather Type: Book cover