Product Description This Strathmore wirebound sketchbook contains 400 Series toned gray sketch paper that is ideal for light and dark media including graphite pencil, colored pencil. charcoal, sketching stick, soft and oil pastel. The paper is an 80lb (118 g/m2) medium surface. It is acid-free and contains 30% post-consumer fiber. Made in the USA. 5.5×8.5 or 9×12: 50 Sheets. 11×14 or 18×24: 24 pages.