These museum quality 1/8 panels are coated with an ultra smooth absorbent kaolin clay ground. Archival, lightfast and pH neutral, these panels are ideal for acrylics, egg tempera and pen and inks as well as for mixed media techniques and airbrush. The surface is additive and substractive. Remove pigment, add contrast, texture, tonal value and fine detail with the Claybord Tools. Cradled in 2" strips.