Jerseys/Tops (Short Sleeve)

The first aero jersey project was called Split Second 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 now, we thought even small gains were worth pursuing. In the end the gains were pretty substantial, and we completely revolutionized the look of the pro peloton. We're now on the sixth major revision of our aero jersey. Each generation has become more aero and better fitting. The aero race 6. 0 benefits heavily from CFD analysis of wake flow in the riding position for fabric and seam placement. It also benefits from pro riders' feedback, as we've worked to make the jersey comfortable for their long hours of training and then racing in every possible weather condition. Version 6.0 is our most aero and most comfortable aero race jersey yet. But we're already at work on 6.1. . . - CFD-based fabric placement and seam construction - Engineered for aero efficiency at 30 to 55 km/h - Airflow shoulder construction - Velocity Rev2 fabric on front and sleeve - 3D mesh back for breathability

The ideal all-around jersey for endurance rides, offering comfort and convenience features, excellent moisture management, and Castelli's aerodynamic wizardry. - Endurance and all-around jersey combining aerodynamics, comfort, and convenience - Velocity dimpled fabric on front and shoulders for faster drying - Air Mesh sleeves with raw-cut sleeve ending - Multifilament fabric on back blocks 94% of UV rays - Nervato fabric at armholes for improved aerodynamics - Full-length YKK® Vislon® zipper with neck protector

If you had to choose one jersey to do it all, this would be the one. The name kind of says it all: Endurance. For your long rides, a jersey needs to be able to do it all, offering comfort, carrying capacity, a wide temperature range with sun protection, and good aerodynamics. This jersey checks all those boxes. The comfort comes from a close-to-body fit with stretchy fabrics so it doesn't feel tight. Four different fabrics keep you dry while covering every temperature range from mild to hot. And extra comfort comes from details like the flap behind the zipper to protect your neck and the stretch sleeves with raw-cut edges that never bind or constrict. The pockets feature Castelli's drop-pocket design, which places the pockets lower on the back for easier access. There's even a fourth zippered pocket for valuables. Your long rides and even your short rides will be faster with less effort because this jersey is also highly aerodynamic, especially through the sleeves and shoulders, which feature the same fabric used on several generations of our pro-level race jerseys. The old saying is jack of all trades, master of none. The Endurance Pro Jersey really is master of all. - Endurance and all-around jersey with mix of aerodynamics, comfort, and convenience - Velocity dimpled fabric on front and shoulders for faster drying - Air mesh sleeves with raw-cut sleeve ending - Multifilament fabric on back blocks 94% of UV rays - Nervato fabric at armholes for improved aerodynamics

If you had to choose one jersey to do it all, this would be the one. The name kind of says it all: Endurance. For your long rides, a jersey needs to be able to do it all, offering comfort, carrying capacity, a wide temperature range with sun protection, and good aerodynamics. This jersey checks all those boxes. The comfort comes from a close-to-body fit with stretchy fabrics so it doesn't feel tight. Four different fabrics keep you dry while covering every temperature range from mild to hot. And extra comfort comes from details like the flap behind the zipper to protect your neck and the stretch sleeves with raw-cut edges that never bind or constrict. The pockets feature Castelli's drop-pocket design, which places the pockets lower on the back for easier access. There's even a fourth zippered pocket for valuables. Your long rides and even your short rides will be faster with less effort because this jersey is also highly aerodynamic, especially through the sleeves and shoulders, which feature the same fabric used on several generations of our pro-level race jerseys. The old saying is jack of all trades, master of none. The Endurance Elite Jersey really is master of all. - Endurance and all-around jersey with mix of aerodynamics, comfort, and convenience - Velocity dimpled fabric on front and shoulders for faster drying - Air mesh sleeves with raw-cut sleeve ending - Multifilament fabric on back blocks 94% of UV rays - Nervato fabric at armholes for improved aerodynamics