Foam board is strong, lightweight and rigid making it very versatile. 3/16" polystyrene CFC-free core springs back to original thickness when cut. Smooth surface accepts screen printing, glue, paint or markers; cuts cleanly with an X-ACTO knife (sold separately). Art Board Thickness: N/A; Art Board Type: Foam; Material(s): CFC-Free Polystyrene Foam Core; Color(s): White Surface/White Core.