Elmer's Colored Foam Boards, 20 x 30 Inches, 3/16-Inch Thick, Black, 10-Count (950055) 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 20 x 30 inch size - Case of 10 black foam boards