Pentalic - Nature Sketchbook - Natural White - 130lb - 5x7in. - The Pentalic Nature Sketchbook contains 50 sheets of heavyweight, 130lb, 211gsm, 25% cotton sketch paper. Each sheet has a toothy, rough vellum surface for the fine artist. This extremely creamy paper is suitable for pencil, charcoal, ink, acrylics, pastels and oil pastels, watercolor pencils, watercolors (light washes) and tempera. A heavyweight chipboard back allows field use without buckling. The Pentalic Nature Sketchbook has a black plastic spiral binding along the side. A percentage of all Nature Sketch sales will be donated to the American Wildlife Fund located in Molalla, Oregon.