2-Ply laminated sheet, archival quality vellum Bristol. Professional artist grade, bright white sheet with a textured vellum surface. Exceptional erasing qualities. Hard surface allows easy tape removal after masking. ACID FREE Weight: Pads 100 lb. (265 g/m2) - Sheet Packs 100 lb. (219 g/m2) Color: Bright white Surface: Textured Media: Airbrush, pencil, crayon, pastel, charcoal, and watercolor Options Available: Tape bound pads and sheet packs Proudly made in the USA.