Constructed with sturdy twin-wire binding, this sketchbook opens flat to provide the ideal working surface for sketching anywhere. It features a durable cover with 75 sheets of heavyweight, acid-free paper that is excellent for use with pencil, charcoal, markers, pastels and many other media.Details:Black polypropylene cover9" x 12" (229mm x 305mm) notebook70 lb. (114 gsm) heavyweight, acid-free paper75 sheetsFine surfaceLays flatHandles mixed media wellTwin-wire binding