Bright white professional illustration board with a cold-press, medium-textured surface. Great for pencil, charcoal, pastels and all dry media. Also a great choice for watercolor illustrations. This bright white, professional-grade illustration board features a cold-press, medium-textured surface, perfect for a wide range of dry media such as pencil, charcoal, and pastels. It's also an excellent choice for watercolor illustrations. The board consists of two layers of acid-free and pH-neutral paper bonded to a chipboard core made from wood fiber. The front layer is 60lb paper, while the back is 80lb paper. The total thickness of the board is .0165" (.005" for the top paper, .0045" for the core, and .007" for the back paper).