Calzini Castelli Fast Feet 2 Occhiali e Maschere Chin strap with double D-ring

Chin strap with double D-ring for a secure fit

measuring power on the left side to calculate total watts

- Group LiveTrack

also for e-bikes

Calzini Castelli Fast Feet 2 Occhiali e Maschere Chin strap with double D-ringFor road rides or when it's not possible to wear Fast Feet shoe covers, this sock saves you watts. Product features Castelli Fast Feet design, for pedaling even in hot conditions. The foot part is inspired by the Castelli Rosso Corsa sock for maximum comfort inside the shoe Polyurethane strip on the back to keep the sock perfectly in place The leg part is made of Lycra with grooves designed to promote airflow Temperature: 10C 30C 50F 86F Fit: Aero