These pads are made with 100% windpower - a pollution free renewable energy resource. Perfect for the enviornmentally conscientious consumer. The tape-bound heavy-weight white drawing board in the Smooth Bristol Pads, is ideal for fine drawing techniques. Lightly textured, the surface of the heavy-weight, white drawing board in these tape bound vellum bristol pads is designed to accept a variety of media. Fifteen sheets per pad.