Thank you for viewing. This is a handmade denim book cover. The size is for a Japanese "shinsho" book (pocket-sized). It can be used for books with a thickness of around 1.5cm. The denim color is navy. The lining is a light navy dungaree fabric. As this item is made of denim, fading and color transfer may occur during use. This is a handmade item made by an amateur using a home sewing machine, so it may not be suitable for those who are particular about the stitching or finish. Please understand that this is a handmade item and purchase accordingly.