Trailer Towing Mirrors offer multiple perspective rear views and are manufactured with an aerodynamic design that helps improve fuel efficiency. Trailer Tow Mirrors are designed with dual functionality and help improve visibility when towing wide or long trailers. Trailer Tow Mirrors include convex spotter glass for improve blind spot visibility and feature premium-quality glass on a sturdy steel mount to help insure stable, vibration-free reflections. Features include power control, defrost and puddle lamps.