PaintOn is extra heavyweight (250g) professional quality paper produced in our 400 year old Dutch mill. It's perfect for both wet and dry media. Adapted for watercolor, light acrylic and paint washes, as well as pen & ink, pencil, pastel, collage medium, etc. Available in 4 colors (white, black, gray, and natural). Colors are deep-dyed (no white core). 20 sheets per pad.. Three sizes.