Castelli -6 Fast Feet Overshoes EU 36-39 Black – EU 45-46 Black

Ultimate aero accessory to cover shoes and calves for reduced drag.

FEATURES:

For athletes searching for that last bit of performance gain.

Wind tunnel tests showed up to a 6-watt savings at 45 km/h compared to a normal sock.

Silicone-coated stretch 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.

YKK® zipper.