This vinyl pontoon guard is designed for the ultimate in protection. Features an outer shell made of UV-resistant polyethylene to protect the fence and an inner core made of soft PVC that absorbs impact. To install, simply position the elastic band on top of fender, and push down for docking mode. Reposition the safety top elastic band to secure the fender up when in navigation mode. No assembly required. Comes ready for quick installation. 36"H x 7"W x 6"D in up position; 49"H x 7"W x 6"D in down position.