Book-Aid® cloth wings are applied to the spine edges of books, offering additional protection against tearing and other damage, as well as helping to hold together existing rips. It features a release liner, for an easy peel-and-stick application. Just center the wings on your book spine edge, with the wings facing away from the book, and press it onto the spine. Then take turns pressing each wing around to the front of the cover, and wrap the excess onto the inside of the covers. These book repair wings are made of an 11.5 mil cloth, which offers long-term protection with no cutting or measuring. You can buy Book-Aid® cloth wings online in a variety of colors, including black, blue, brown, burgundy, green, red, white and yellow.