Castelli ’s Alpha 150 W Women’s Winter Cycling Jacket 2027

The Castelli Alpha 150 W Jacket is the premium winter jacket designed for cyclists riding in cold to very cold weather. It combines warmth, breathability and comfort to offer the best possible experience on the bike even when temperatures drop.

On the outside, the exclusive 150g Polartec® AirCore™ membrane, which is breathable, guarantees protection against wind and light rain, whilst ensuring unrivalled breathability. On the inside, the Polartec® Alpha™ insulating lining provides exceptional warmth for a featherweight design, whilst effectively managing moisture to keep you dry during intense exertion.

With its covered two-way YKK® Vislon® zip, zipped pocket, three spacious rear pockets and reflective details, it combines technical performance with practicality. Its Tailored fit, snug yet comfortable, hugs the body without restricting movement, for a look that is both high-performance and elegant.

Technical specifications:

- Colour: Light Black/Black
- Sizes: XS to XL
- Temperature range: -2°C – 10°C
- Weight: Ultra-light (effective insulation without bulk)
- Fit: Tailored
- Insulation: Polartec® Alpha™ – high warmth and breathability
- Water resistance: Protection against light rain
- Wind resistance: Full (front and back)
- Breathability: Excellent, thanks to Polartec® AirCore™
- Zip: YKK® Vislon® two-way, protected against wind and rain
- Pockets: 3 rear pockets + 1 zipped pocket (keys/change)
- Reflective elements: Piping at the bottom of the pockets for improved visibility
- Brand: Castelli

Castelli size guide