Total 30 pcs = (47*34) 10Pcs + (43*30) 10Pcs + (34*25) 10Pcs . It is a contact paper. Ideal for covering books,arts,crafts,furniture and many smooth surfaces. CRYSTAL CLEAR 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, 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 19 1/2” total width) so it doesn’t 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