The fastest covering for your feet, for the high speeds of time trialing.
- Castelli's Fast Feet project — for time trials
- Extensively tested to be the fastest foot covering for time trialing
- Silicone-coated fabric over the shoe smooths out airflow
- Engineered grooved Lycra® on ankle portion helps detach airflow
- Flat polyurethane tape at top to keep shoecover in place