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, is acid-free, archival, and heat-resistant. The film is .005'' thick and has a matte, translucent drawing surface on two sides. It will accept lead, ink, and colored pencil. It erases cleanly and is an economical alternative to acetate and drafting film. Twenty-five sheets per pad. Brand: Grafix