This item is handmade using black oil wax leather approximately 1.5mm thick, with the entire perimeter hand-stitched with black thread. The surface has a light wax coating, giving it a moist, soft feel, and a very pleasant texture. The use of thick leather results in a sturdy construction. It can be used as a cover for paperback books or A6-sized notebooks. When open, it measures 16.5 cm x approximately 25 cm. It can accommodate books and notebooks up to approximately 2 cm thick. Images 1, 2, 3, and 4 show the cover used with a book that is 1.7 cm thick. As shown in images 5 and 6, it has cut-out pockets on the left and right inside for cards and business cards, a pocket on the left side for memo paper, and a bookmark in the center. Because it uses vegetable-tanned leather, the depth of character increases with use, allowing you to enjoy the aging process. Please also enjoy the feel of genuine leather. The book, cards, and memo paper in the images are not included with the product. As natural materials are used, there may be scratches and wrinkles. Thank you for your understanding of handmade items.