Use the PolyDome Marker to provide 360° visibility to identify pipelines, fiber optic cables, and other underground utilities. Both the PolyDome Marker and posts are made from durable high-density UV treated polyethylene. Because ACP uses UV-resistant enamel inks, the printed materials will not peel or disbond for the life of the marker. The domed marker and post have a guaranteed outdoor life of 10 years.