SIDI Genius X WYVE Road Shoes - Black 43 Mount | Rotor Size-Rear IS | 180 Rotor There are five different models

There are five different models which allow different volumes of airflow

here they are

3/8" drive

The Shimano GRX BR-RX820 2-piston disc brake caliper brings a high level of control to gravel cycling with enhanced modulation and a quick initial braking point

SIDI Genius X WYVE Road Shoes - Black 43 Mount | Rotor Size-Rear IS | 180 Rotor There are five different modelsGeniusX WYVE combines breathable mesh with TPU reinforcements to deliver lightweight ventilation and enhanced foot stability. Dual NUUN dials and a High Density Instep ensure a precise fit while the R3CC carbon composite sole (stiffness index 6) provides smooth power transfer and balanced comfort across all ride types. Genius X based upper enhances ventilation stability and reduces weight for all day performance NUUN 001C aero dials offer fast precise