Toned sketch paper is ideal for light and Dark media including graphite, chalk, charcoal, sketching sticks, markers, China markers, colored pencils, pens and white gel pens. 100percent recycled, and contains 30percent post-consumer fiber. Wire bound with actual size sheets when removed trimmed at the wire binding. Acid free. 80lb medium surface 50 sheets per pad. This item is manufactured in United States.