Strathmore 300 Series Bristol Roll 42" x 10 yds with an Ultra Smooth surface 100lb or 270gsm Extra White is a acid free paper ensures longevity. Suitable for use with graphite pencil, colored pencil, pen & ink, alcohol based markers (ProMarker & Copic), paint markers (Uni Posca & Sharpie), mixed media and collage. Ideal for practicing techniques or creating finished work