The Strathmore 400 Series Toned Hard-Bound Art Book contains 128 pages (64 sheets) of the the same high-quality paper used in Strathmore fine art pads. It's lightly-textured matte covers are a dark chocolate brown and the durable Smyth-sewn binding allows pages to lay flat. The 400 Series Toned Sketch Art Book features Cool Gray 80 lb. (118 gsm) medium-surface sketch paper. Great for light and dark media, graphite, chalk, charcoal, sketching stick, marker, china marker, colored pencil, pen and white gel pen. The paper contains 30% post-consumer fiber and is 100% recycled.