CASTELLI x BLACKSMITH Women's Jersey shoes with Active Turbulator

with Active Turbulator

4 spoke wrenches

Thanks to the tubeless-suitable system

The thin SUPtraction® rubber sole offers excellent grip

The special SpeedGRIP Compound adds features of mechanical resistance and chemical grip

CASTELLI x BLACKSMITH Women's Jersey shoes with Active TurbulatorDescription Designed by Blacksmith, made by Castelli. When Castelli engineered the first aero jersey for road racing back in 2006, everyone thought we were crazy. Back then, aero was only for TTs. Performance clothing meant moisture management. And you could win the Tour de France with a baggy jersey that was little more than a polyester T shirt. Even our aerodynamic consultants expected limited gains, so we named the jersey Split Second, though, like