U.S. Art Supply 9" x 12" Premium Heavy-Weight Paper Spiral Bound Sketch Pad, 90 Pound (160gsm), Pad of 30-Sheets (Pack of 2 Pads) Acid Free, Neutral pH, Spiral Bound Natural White Sheets for Easy Removal Heavy Weight and Versatile Semi-Textured Paper made to Accept all Mixed Media Ideal for Writing, Drawing & Sketching. Use with Pens, Markers, Pencils and more