Polystyrene extruded foam laminated between two sheets of paper to form a lightweight but strong and rigid surface. Ideal for crafts, school projects, framing, mounting, displays, posters and exhibits. Easy-to-cut sheets have a smooth surface, and accept a wide range of media including paints. Sheets are 3⁄16" thick. Assortment includes two sheets each of six Fadeless® colors: Canary, Flame, Pink, Lite Blue, Brite Blue and Apple Green. Acid free.