Copic Marker Sketchbook 7" X 10", 70#, 50 Sheets, Side Spiral bound with hard cover. Especially for use with Copic Markers, but are also great for mixed media. Thick, all-purpose paper is great for mixed media work. Paper is bleed-resistant and thick enough to handle watercolor. As With all Copic papers, keep clean scratch paper under your work at all times.