Strathmore 400 Series Artagain paper is sturdy, black fiber-enhanced and made with 30% post-consumer material. They are ideally suited for soft pastels, colored pencils and charcoal. Artagain paper is acid-free, medium weight (60lb or 160 gsm) 15.2 x 22.9 cm or 6'' x 9'' and lightly textured. Lightfast, Acid Free paper ensures longevity. Use gel roller pens for dramatic effects.