Book Protective cover 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 Crystal Clear book cover 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 Self-Adhesive & Easy to Apply – No need for extra glue or tape! The pre-cut design allows for hassle-free applicatio just peel and stick without bubbles or wrinkles.