Presentations and projects will be taken to a whole new level with foam core boards. The smooth, bright white surface has a slightly glossy finish that easily accepts markers, crayons, paints, and adhesives. Lightweight and rigid, foam board cuts easily with a utility knife or razor. Perfect for mounting photographs and artwork, 3-D modeling, small signage, and scaled down arts and crafts! Boards measure 30" x 40" with 3/16" (5mm) thick, dense white polystyrene foam core and white on back of sheet. Pack of 25 white boards.