Stonehenge Aqua Black watercolor paper performs to the most critical demands expected by artists. Ideal for use with metallic and pearlescent watercolor paints, pencils, pens, markers and inks. Available in 140 lb. (300gsm) cold-press or hot-press 15-sheet paper pads. This paper dries flat and colors dry bright. Featuring 100% cotton fiber, it has a neutral pH, is acid- and lignin-free. It delivers great results whether working wet, wet on dry, blending, lifting or masking out.