Buy one 8.5x11" Cachet Classic Hardbound Sketchbook and Get One 8.5x11" Simply Hardbound Sketchbook Free! Cachet Sketchbooks feature a superior quality, embossed, water resistant black cover with 110 sheets (220 pages) of acid free unlined 70 lb. paper. The simply Sketchbook features a hard canvas color with 80 sheets (160 pages) of acid free unlined 65 lb. soft white paper with a smooth texture.