This is a simple and elegant smartphone case that luxuriously uses "shrink calf leather," which is widely adopted by luxury European brands. The more you use it, the more character it gains. It hardly fades or discolors, and you can enjoy the soft, natural appearance for a long time. The color is Blue Lin. I have used it for about two weeks. There are no noticeable stains, but please understand that this is a used item before purchasing. It will be shipped without the outer box.