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The Castelli Fast Feet sock has the development and testing to back up the aerodynamic claims. Features: 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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🇺🇸 Ship from USA · On Agora since 2025
$65.00