Create artwork, crafts, and school projects with Foam Board display boards. Designed for durability, this lightweight foam display board features a polystyrene ?Memory? core that expands back into shape after cutting for a consistent thickness from edge to edge. Each Elmer’s Foam Board features smooth surfaces that are perfect for pencils, markers, paints, adhesives, and fabrics. Strong enough to resist crushing and denting, Elmer?s Foam Board adds dimension to your creativity. Art Board Type: Tack Display Board; Material(s): CFC-Free Polystyrene Core; Color(s): Black Surface/Black Core; Board Size (W x H): 20 x 30.