WHAT IT IS / PRODUCT FEATURES
Best-in-class aerodynamics combined with all-day comfort. This jersey is designed to save watts while providing moisture management and comfort on even the longest workouts.
Material and seam placement based on CFD analysis
Air_O Stretch material developed at CASTELLI to ensure breathability, comfort and a perfect fit
Designed for aerodynamic efficiency at speeds from 30 to 55 km/h
Fabric tuned for aerodynamics and breathability
Ideal in combination with the Bolero SS base shirt for further aerodynamic enhancement.
Shoulder design for ideal airflow
Unlined sleeves with elbow length
Elasticated waistband keeps the jersey in place and provides pocket support.
YKK® Vislon® zipper
Includes bluesign® certified fabrics
Weight: 93g(M)
Cut.
Temperature range: 18-35°C
Material composition:
Main material 82%polyester 18%elastane
Back piece 95%polyester 5%elastane
When CASTELLI created the first aero jersey for road racing in 2006, everyone thought we were crazy, including some pro riders. Back then, aerodynamics was just for time trials. Functional clothing meant moisture wicking, and the Tour de France could be won in a loose jersey that was essentially a polyester t-shirt with pockets on the back. Even our aerodynamics consultants expected only a minimal advantage, if any, which is why we named the jersey the Fraction of a Second. In the end, the advantages of the jersey were quite significant and we were able to start a revolution in the look of the pro peloton. The jersey is now in its seventh generation and we've managed to improve it each time. We still rely heavily on CFD analysis of airflow in the riding position for material and seam placement, and together with feedback from riders, we are able to create a jersey that is not only fast, but also comfortable on long rides. And when you need to maximize your aerodynamic advantage, just wear the Bolero SS under your jersey.
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