Selected highquality PU leather, the inner page is smooth, and the imprinting effect is exquisite. The color-changing leather is made of special PU resin with color-changing powder. The color-changing powder is not elastic. When this kind of PU leather is under the action of external stresses such as stretching, bending and bending, the color-changing powder in the PU film layer will show its own whiteness, resulting in color change in the deformation part of the leather. Selected 80g rice ecliptic paper, locking process, not easy to fall off the pageRefined edge wrapping process, soft and comfortable, extraordinary taste, extraordinary style, very good to show your charm