This polyester film combines the best features of Mylar and acetate to provide a highly versatile film with high tensile, tear, and impact strength. Dimensionally stable, it will not crack, discolor, or become brittle with age. It lays flat and measures .005 inches thick. It is acid-free, archival, and heat-resistant. The film also features a matte, translucent drawing surface on two sides. It will accept lead, ink, and colored pencil. It will erase cleanly and is an economical alternative to acetate and drafting film. Twenty-five sheets per pad. Brand: Grafix