Elmer's Colored Foam Board , 20 x 30, Blue, 10-Pack (950053) 20 x 30 inch size - Case of 10 blue foam boards (Blue colored on front and White colored on the back) Lightweight but strong and rigid 3/16-inch core resists denting and crushing Smooth surface is perfect for paints, markers, glue, and other embellishments Perfect for crafts, school projects, framing and mounting