Jackets designed to fit standard exercise books (23cm x 18cm). Jacket size = 9" x 7" (240mm x 183mm). Clear 150 micron thickness with 60mm overlapping flap. Simply slip the book cover into both jacket flaps for a neat fit protective cover that is weatherproof and wipeable. Non-adhesive and reusable. Can be written on with permanent marker or customised with stickers etc. Pack of 10