Castelli Climber's A/C Jersey Men's

The Castelli Climber's A/C Jersey is a high-performance cycling jersey developed specifically for extremely hot riding conditions without sacrificing aerodynamics or race-level efficiency.

It originates from Castelli’s WorldTour experience during hot Alpine stages, where professional riders demanded a jersey capable of staying exceptionally cool, lightweight and fast during long climbs and high temperatures.

The construction uses highly ventilated 3D fabrics and CFD-based panel placement to optimize airflow and aerodynamic efficiency. 

Key features

• Ultra-breathable summer cycling jersey
• CFD-based aerodynamic construction
• Highly ventilated 3D fabrics
• Very fast drying performance
• Close-fitting Race Fit
• Raw-cut elbow-length sleeves
• Smooth YKK® Vislon® zipper
• Waist gripper for stability
• UV protection on rear panel

Performance in hot weather

The Climber's A/C is specifically designed for temperatures between 22°C and 40°C, delivering exceptional airflow during long climbs, hard training rides and summer cycling sessions. 

The Flusso 3D front fabric and StradaPro 3D rear panel help dissipate heat and moisture quickly while keeping the body drier during intense efforts. 

Many cyclists particularly appreciate the extremely lightweight feel and quick-drying performance during hot-weather riding. 

Racing aerodynamics

Despite its high ventilation capability, Castelli maintained a performance-oriented construction inspired by the brand’s aero race jerseys.

The extended stretch sleeves and close race fit help reduce turbulence and fabric flapping at higher speeds. 

Comfort and fit

The Race Fit is designed to sit very close to the body in the riding position.

The fabrics remain soft and stretchable, improving comfort and freedom of movement during endurance rides and long training sessions. 

Technical specifications

• Brand: Castelli
• Model: Climber's A/C Jersey
• Use: Road cycling
• Fit: Race Fit
• Claimed weight: 144 g
• Recommended temperature: 22°C – 40°C
• UV protection: 90%+ on rear panel
• Zipper: YKK® Vislon®
• Sleeves: Long raw-cut aero sleeves

Why choose Castelli Climber's A/C

• One of Castelli’s lightest and coolest jerseys
• Exceptional ventilation for peak summer riding
• Aerodynamic race-focused construction
• Very fast drying fabrics
• Excellent climbing comfort
• Perfect for intense summer training and gran fondos
• Technology derived from professional cycling

Recommended use

• Road cycling
• Summer training rides
• Long mountain climbs
• Gran fondo events
• Very hot climates
• Performance cycling