WindpowerTM Drawing 80 lb. (24" x 36" x 500 sheets) 130 g/m2 30% post-consumer fiber Strathmore windpower drawing paper is environmentally friendly, heavyweight drawing paper is perfect for finished works of art. This bright white paper is the artist's choice for working with pencil, pen, charcoal, or pastel. Micro-perforated for easy sheet removal. Acid Free. Windpower paper is a solution.