Look/Shimano Cleat Wedges® work with Look Keo, Look Delta, Shimano SL road, Campagnolo, Time road and similar 3-hole cleat systems.
Research conducted on cyclist's feet showed that 96% of us have forefeet that are canted or tilted up to the inside inward ("varus") or outward toward the outside ("valgus"). The vast majority (87%) of cyclist's feet tilt up to the inside. Unfortunately, almost all cycling shoes, cleats and pedals take this natural tilt and force it flat. This can generate knee pain, create a foot "hotspot" (where the inner or outer side of the foot feels hot) and diminish your ability to generate power.
Cleat Wedges® enable the cycling shoe to connect with the pedal naturally, by acknowledging the foot's inherent angle. This creates a neutral foot position throughout the pedaling cycle, resulting in greater comfort and power.