Faux Like a Pro 6-Pack Mighty Boards Waterproof Plastic Poster Board for Artists and Painters 6-Pack of matte/matte Styrene Sheets - .020 inch thick 18"X24" surface - Cut to smaller sizes Use pens, pencils, acrylic and latex paint, glues and more 100% waterproof - Use for outdoor signs Are you repainting your house? Use to make large paint swatches