Another season, another fastest jersey Castelli has ever made. The Aero Race 5.1 jersey is more lightweight and is more comfortable and durable. It is so aero, that it showed a 2
watt gain in the wind tunnel.
Castelli improved the Velocissimo bibshort and added a new waistband construction for extra comfort. The nine-panel anatomic construction guarantee excellent fit and the KISS Air seat pad protects you against shocks and vibrations.