Speedplay is a brand of clipless bicycle pedal manufactured by Speedplay Inc. in San Diego, California. Models include Zero, Light Action, and X for road cycling, Frog for mountain biking, and Drillium for downhill. Speedplay pedals are used by many top professional racers, such as Cadel Evans, Fabian Cancellara, Jens Voigt, Taylor Phinney, and Thor Hushovd. Speedplay road pedals are popular with triathletes. The first Speedplay pedal, the X, was patented in July 1989 by Richard Byrne. The company was founded in July, 1991. The Frog, the lightest recessed-cleat pedal system at the time, was patented in September 1992.