This polystyrene extruded foam is laminated between two sheets of paper to form a lightweight but strong and rigid surface that is ideal for crafts, school projects, framing, mounting, displays and exhibits. Pacon® Foam Board has a smooth surface that can accept a wide range of media, including paints. Sheets are easy to cut and are warp and dent resistant. It's 3/16." The Assortment contains 5 sheets of White and one sheet each of Black, Blue, Green, Red and Yellow.