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Fast Feet 4 Sock
New Arrival Spring 2026
Castelli's Fast Feet project — for maximum aerodynamics.
Foot portion based on Castelli Rosso Corsa Sock for in-shoe comfort.
Polyurethane grip strip at top to keep sock in place Leg portion constructed with engineered grooved Lycra® to help detach airflow
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From $57.95
Fast Feet 4 Sock—
$57.95
Description
New Arrival Spring 2026
Castelli's Fast Feet project — for maximum aerodynamics.
Foot portion based on Castelli Rosso Corsa Sock for in-shoe comfort.
Polyurethane grip strip at top to keep sock in place Leg portion constructed with engineered grooved Lycra® to help detach airflow
