Best-in-class aerodynamics combined with all-day comfort. This jersey is designed to save watts while ensuring moisture regulation and comfort even during the longest training sessions.
- Distribution of material and seams based on CFD analysis
- Air_O Stretch material developed by Castelli to ensure breathability, comfort and 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 undershirt to further improve aerodynamics.
- Shoulder construction for ideal air flow
- Unstitched sleeves with elbow length
- The elastic waistband keeps the jersey in place and provides support for the pockets.
- YKK® Vislon® zipper
- Contains bluesign® certified fabrics
- Weight: 93g(M)
- Cut: Racing
- Temperature range: 18-35°C
- Material composition: Main material 82% polyester 18% elastane, Back part 95% polyester 5% elastane
When Castelli created the first aero jersey for competitive road cycling in 2006, everyone thought we were crazy, including some pro riders. Aerodynamics was then only for a time trial. The functionality of the clothing meant moisture wicking, and the Tour de France could be won in a loose jersey, which was basically a polyester T-shirt with pockets on the back. Even our aerodynamics consultants expected minimal, if any, advantage, which is why we named the jersey the Split Second. In the end, the advantages of the jersey were quite significant and we managed to start a revolution in the appearance of the professional peloton. The jersey is already in its seventh generation and we have managed to improve it every time. When placing the material and seams, we still rely mainly on CFD analysis of the airflow in the riding position, and together with the feedback from the riders, we can 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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