This high-quality, durable book cover is designed for AA Big Book, but it can be used for any books that are approximately 6.5 inches by 9 inches in size. It is made of leather-like vinyl (vegan leather). It also has a medallion holder, which can be used to hold standard-sized AA medallions or any other coins up to 34 mm (1 5/16 inches) in diameter. It will protect your book for years to come. It also makes for a great sobriety gift.