ClearBags 8 &frac12; x 15 Clear Book Covers | For Books 8 1/4&rdquo; Tall and Up To 15&rdquo; Wide | Protect Against Wear and Tear, Water and Dust | Archival Safe, Acid Free | BC81H (Pack of 25) ADJUSTABLE WIDTH: Fits books that are 8 1/4" tall and up to 15" wide (width of front + width of back + thickness of spine). The adjustable width allows this cover to fit book widths up to 15" (width of front + width of back + thickness of spine). These clear book covers will fit many books and multiple book thicknesses CRYSTAL CLEAR, DURABLE BOOK COVERS will protect your books from greasy fingers, dust, pen marks, dirt, and grime. This lightweight barrier is best used in a setting when books are exposed to light wear, such as a book signing, personal collection, school textbook, or gallery environments HIGH QUALITY COVER PROTECTION means that these plastic book covers are engineered with 2.0 mil polypropylene rather than dense vinyl, so you get high quality protection at an affordable cost. The material is thin and lightweight, yet designed to not easily rip, tear, split, break, or rupture TIGHT FIT STAYS IN PLACE: The adjustable adhesive allows you to customize to the width of your book (under 15 total width) so it doesnt slide around or fall off. No separate tools or materials needed, assembly instructions are included and easy to use. These book covers are guaranteed frustration free and are engineered to the highest standards in the industry at the best price AVAILABLE IN MORE SIZES: We offer a variety of sizes in these clear book covers, from heights 7  - 12  and adjustable widths from 14 - 23 , you are sure to find the size that fits your needs. At ClearBags, we have made it our lifes work to help you promote, protect and preserve your products