Speedplay pedals are incredibly lightweight thanks to intelligent engineering the engagement mechanism is housed in the cleat not the pedal this lets you have a double sided pedal but only carry one mechanism rather than one on each side of the pedalinverted engagement mechanism saves weightinstantaneous release puts an end to low speed fallsself centring cleat pushes out dirt on engagementnon centring flee float minimises knee strainprecision cartridge and needle bearingsperfect for mtbs a