eSource Optics Rainforest Rainbowindow is embossed with a micro-faceted holographic surface. The cut crystal prism designs diffract the sunlight to create patterns of rainbows on walls, ceilings and floors. Each Rainbow Suncatcher comes with a vinyl rubber suction cup attached for easy hanging. Have fun coloring your world! Approximately 10 ½" X 7 ¾" Heavy plastic coated paper board. Plastic holographic lens.