Polystyrene, or styrene for short, is a thin, lightweight  smooth plastic material similar to Sintra, but thinner.

Available in both a flexible .060 thickness as well as an ultra-thin .020 thickness, which is similar to the thickness of a posterboard, but unlike a posterboard, styrene can weather the elements

• Smooth surface
• Comes in .020 and .060 inch thicknesses
• Can be double-sided