Ultra-Smooth Clay Surface - Archival and acid-free, Ampersand"s patented kaolin clay ground is applied to a non-warping premium hardboard and then sanded to a velvet-smooth finish that is very absorbent. A Highly Responsive Surface - Thinly apply paint or ink, remove it, reapply it, even scratch through it to add contrast, texture and fine details. Paint colors remain true and brilliant on this surface. A True Multi-Media Panel - Perfect for inks, gouache, egg tempera, acrylics, airbrush, encaustics, collage, photo-transfers, pencil, casein, and for mounting papers, prints and fabrics. Frame without Glass - Artwork on Claybord™ can be sealed or varnished and framed without glass. Artist & Environment Friendly - Ampersand Claybord™ is made from sustainable forest products that ensure the protection of wildlife, plants, soil an