ALPHA 150 W JACKET

The unique combination of air permeability and Polartec’s nano-fiber membrane lets Polartec® AirCore™ keep you dry while still maintaining the windproof and water repellency of the fabric. This state-of-the-art technology leverages air to maintain a dry microclimate by evaporating sweat from the outside-in.

We’ve engineered RoS as the no-compromise best clothing we know how to make for dry conditions, and then tried to make it as close to waterproof as possible without sacrificing breathability and ventilation.

Polartec® Alpha® is the latest evolution of synthetic insulation offering a rare combination of lightweight warmth and true breathability in a "puffy" style garment. Alpha® creates insulating loft but does not require down proof fabrics, allowing a sandwich construction with mesh and breathable fabrics for performance that's not available in traditional insulation.

Our Rosso Corsa label is only applied to the highest-level products we make. Every thread and fiber, every curve and contour is obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli’s performance-enhancing apparel.