Prang® Watercolor Paper Pad, Unruled, White/multicolor Cover, 30 White 9 X 12 SheetsArt pad features heavyweight, student grade stock that's designed specifically for watercolor painting. For best results, pair with Prang watercolors. Smooth paper finish also supports a variety of art mediums: pencil, charcoal, ink and more. Sturdy paperboard cover provides artists with the flexibility to work from an easel or a tabletop. Acid free processing prevents the paper from yellowing or crumbling with age.