Bikefit Cleat Wedge - Speedplay
The 4-hole system is associated with the Speedplay® pedal/brand. Speedplay design has the clasping mechanism on the cleat, rather than on the pedal, like with SPD and Look systems. In this system, the shoes are made more for riding than walking. The system with a four-fastener connection, generally offers more adjustability options in the foot/pedal connection, often making it a favorite of bike fitters.
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.