Cancellara won Paris-Roubaix with a beautiful solo back in 2016. His bike was equipped with the newest pedals: the Speedplay Zero Pave. Intended to be used by a selected group of professionals only, and not for the market. Until now.
The Speedplay Zero Pave is actually a Zero pedal without the plastic body. The used steel is extra strong for better durability. The open design is created to easily shed gravel and mud. During Paris-Roubaix it wouldn't be the firt time that was necessary. With regular pedals the cleats will get full with mud and clicking in will be impossible.
You can click in to the pedals on both sides, like with mountain bike pedals. The pedals are extra low so there is more play than with other pedals. This makes sure you can make sharper corners, and keep pedaling without the pedals touching the ground.
Speedplay uses 4-point attachment. Adapters are included so cleats fit all shoes with a standard 3-point attachment.