Thank you for looking. Compatible with 46-ban (B5 size) hardcover books. Also available in bunkobon (Japanese paperback) size. A customer commented that the cover is more subdued and tasteful than the image (thank you). I like the delicate feel of the all-over pattern and am fond of it. Outer fabric: Cotton ox (with fusible interfacing) Lining fabric: Cotton I make these as a hobby when I find fabrics I like. Please refrain from purchasing if you are concerned about minor imperfections such as warping or if you are looking for a perfect item.