Pentalic Bamboo Hardbound Sketchbooks contains paper made from 100% certified sustainable forests: 50% bamboo and 50% reed. Bamboo is an endlessly renewable resource because of its very quick growth cycles and prolific heartiness. Artwork-filled volumes stand conveniently upright on a bookshelf. Flush and sturdy binding protects artwork and keeps pages from sliding, for minimized smearing. The spine is designed for lay-flat drawing. Books contain 220 pages (110 sheets) of cream-colored 65 lb. (110 gsm) acid free sketch paper good for use with all dry media. Cover has an embossed faux snake skin texture. Excellent for sketching, classwork and writing.