Thank you for viewing! This is a refined book cover made of cowhide leather. It fits paperback books. (Although some may not fit, most will.) The books in the 3rd and 4th images are approximately 480 pages of Bunshun Bunko. I hope this is helpful. Available in four colors: wine red, brown, black, and blue. Please choose your favorite color. Because genuine leather is used, please note that the color may not be exactly the same as the photos. [1400 yen each] You can purchase individually or as a set, so please comment when purchasing. ※Notes on use It is made tightly so that paperback books with fewer pages can be used without slipping. When you start using it, the leather may not be familiar, and the book may feel tight to insert!! In such cases, please insert your fingers into the four corners and stretch it. We apologize for the inconvenience, but thank you for your understanding.