Castelli

Climber's A/C Short-Sleeve Jersey - Men's

What Our Gearhead® Experts Are Saying:

"This jersey is built for the heat. The airflow is unreal—I can feel it working on long climbs. It fits snug like a race jersey but doesn’t feel suffocating. The fabric choices are smart and purposeful—it’s become my go-to for summer mountains and hot race days."

The Climber’s A/C Short-Sleeve Jersey is purpose-built for demanding conditions where heat, elevation, and speed converge. Designed using CFD (Computational Fluid Dynamics) analysis and real-world testing, it combines maximum breathability with a race-optimized fit to keep riders cool and efficient on the toughest ascents. The front panel features Flusso 3D mesh for rapid airflow, while the StradaPro 3D back maintains breathability and structure without compromising aerodynamics.

Airflow shoulder construction supports a seamless fit, and elbow-length raw-cut sleeves provide aerodynamic gains and next-to-skin comfort. A full-length YKK® Vislon® zipper allows for quick cooling when the road tilts up, and an elastic waistband keeps the jersey securely in place no matter the effort. The jersey offers UPF 13 sun protection, offering basic coverage for exposed rides under strong sun.

From alpine stages to sweltering race circuits, the Climber’s A/C Jersey is engineered for elite-level performance in the heat. It’s light, aerodynamic, and meticulously built to help riders stay cool when every watt counts.