This sketch paper has been toned specifically for use with light and dark media. The 80 lb. (118 gsm), medium-surface sketch paper is appropriate for graphite, chalk, charcoal, sketching stick, marker, China marker, colored pencil, pen and white gel pen. The paper is 100% recycled and acid-free with kraft and bark fiber inclusions for visual interest. Each pack contains 25 19" x 24" sheets of paper.