【 Luxurious use of Italian leather 】 We are thoroughly particular about the selection of materials so that you can enjoy your daily reading and make it of higher quality. Only Italian leather selected by artisans is luxuriously used 100%. The bookmark, which is made of 100% Italian leather, the home of leather, creates a high-quality atmosphere because the more you use it, the deeper the color becomes. Please grow it into your own genuine leather bookmark. 【 Attention to detail 】 We were particular about the string passed through the hole. It is finished in a fashionable specification using a string of the same color as the leather part of the main body. In addition, the length of the string was thoroughly investigated to be the length that can be quickly taken out when sandwiched between books, and the length was designed to be the easiest to take out. Please enjoy BLUE SINCERE's Italian leather bookmark with attention to detail. 【 Thorough supervision by a storage officer 】 Based on such voices as "the thickness comes out when sandwiched between books" and "the mold is attached to the place where it is sandwiched", we thoroughly pursued thinness under the supervision of a storage specialist. Its thinness is 1.5 cm, which is the thinnest in the industry! This way, you don't have to worry about your precious books getting molded. It won't hurt your precious books.