These Strathmore 400 Series Toned Sketch Paper pads feature 100% recycled acid-free toned sketch paper. This paper is great for light and dark media including graphite chalk charcoal sketching stick markers china markers colored pencils pens and white gel pens. These pads are wire bound with a micro-perforation which allows you to keep the sketches as actual size sheets for display or future reference. Pads come in a variety of sizes and contain 30% post-consumer fiber. • Acid-free. • Great for light and dark media. • Great for graphite chalk charcoal sketching stick marker china marker color pencil pen and gel pen. • Wire bound. • Micro-perforated. • 30% post-consumer fiber. • color: gray. • size: 9 in. x 12 in. • Sold as 1 Each.