Take on your next project by creating signs or presentations easily on the lightweight and smooth surface. The foam board cuts effortlessly with a utility knife or razor. Perfect for mounting photographs and artwork, 3-D modeling, customizing announcements and displaying information! This product makes adding pictures or material easy using glue or tape. Both the back of the board and foam core are white. Foam boards measure 30" x 40" with 3/16" (5mm) thick. Foam board is made of polystyrene for a long-lasting quality. Pack of 10.