Dear Makura, Thank you for your review and consideration. Thank you for viewing. This is a simple book cover. It is made from the popular Italian leather MARGOT (Margot) in Cobalt (blue) & Lilla (pink). MARGOT is leather made from European cowhide tanned with vegetable tannins and has a scratch finish. The color will deepen and develop a luster over time with use. We hope you enjoy the aging process. ◎Cobalt ・Product Size (outer dimensions): 30.0cm x 16.3cm The inner height is 154mm. It supports the tall paperback size (height 152mm) of major publishers. Also, it is a fold-over type to accommodate the thickness of the book. MARGOT is 1.4mm thick and feels slightly firm, but it is a soft and calm leather, so we hope you enjoy the texture. ・Thickness of MARGOT used 1.4mm ・Thread Binimo MBT #5 Color number 18 ・Weight 69g The 6th photo shows a Kodansha Bunko book with 380 pages, and the 7th photo shows a Bunshun Bunko book with 580 pages inside. ◎Lilla (Pink) ・Product Size (outer dimensions): 29.9cm x 16.3cm The inner height is 154mm. It supports the tall paperback size (height 152mm) of major publishers. ・Thickness of MARGOT used 1.4mm ・Thread Binimo MBT #5 Color number 16 ・Weight 70g The 13th photo shows a Kodansha Bunko book with 380 pages, and the 14th photo shows a Bunshun Bunko book with 580 pages inside. ※The last photo is a comparison photo after aging for about six months with Cobalt. 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 enjoy them as individual characteristics. We ask for your understanding and confirmation with the photos. Shipping will be via Yu-Packet Post Mini, folded. We apologize, but please refrain from comments requesting price negotiations.