Early pedals were simply platforms (with a rotatating axis) on which the cyclist could press downward with the foot. Later, cages were added to help keep the foot in place. Then toe straps were added to both further secure the foot to the pedal and to allow the cyclist to apply power on the upstroke by pulling against the pedal. In 1984, the French company, Look, applied downhill snow skiing binding or cleat technology to pedals producing the first practical clipless pedals. Bernard Hinault's victory in Tour de France in 1985 helped secure the acceptance of quick-release clipless pedal systems by cyclists. Those pedals, and compatible models by other manufracturers, remain in widespread use today.
Various other manufacturers have produced their own design of clipless pedal systems over the years, notably BeBop, Time and the Shimano SPD system.