Castelli Alpha Flight RoS Jacket – The Gold Standard of Winter Gear

The Castelli Alpha Flight RoS Jacket is the flagship of the winter collection, offering unparalleled temperature regulation. This "Rain or Shine" (RoS) jacket is designed to excel in both dry and wet conditions, making it the most versatile outer layer for serious winter training.

Double-Layer Alpha Construction

The genius of the Alpha design lies in its double-layer construction. An insulating inner layer stays close to the body, while the outer shell blocks wind and sheds water. This allows you to unzip the outer layer to increase airflow during a climb while keeping the thermal layer closed, preventing the "chill factor" when you reach the summit.

Performance Features:

• Construction: Alpha double-layer for superior ventilation control.
• Weather Protection: Windproof and highly water-resistant.
• Fit: Tailored for an aerodynamic cycling position.
• Versatility: Optimised for a wide range of winter temperatures.