Heavy-duty wheel stops manufactured from 100% recycled rubber. Unlike concrete, which often breaks, cracks, or chips, flexible rubber parking stops are safer and more durable. In-molded reflective tape available in yellow or white (not paint) increases driver and pedestrian visibility 360-degrees. Park It car stops are available in black, blue, or red rubber with sizes of: 22-inches, 3-foot, 4-foot, and 6-foot lengths. They are covered by a 3 year warranty on the rubber, and 1 year warranty on the tape (under normal use). Can be installed on concrete or asphalt.