Castelli Alpha 150 Winter Cycling Jacket 2027

The Castelli Alpha 150 Jacket is the ultimate winter jacket for cyclists who face the cold without compromise. Designed to strike the perfect balance between warmth, protection and breathability, it combines two cutting-edge technologies developed by Polartec.

On the outside, the 150g Polartec AirCore electrospun membrane, exclusive to Castelli, offers outstanding windproof protection and effective resistance to light rain, whilst ensuring some of the best breathability on the market. This innovation allows you to ride comfortably even in the most demanding conditions.

On the inside, the Polartec Alpha insulating lining provides exceptional warmth for minimal weight. Its moisture-regulating properties keep you dry even during the most intense exertion, thus preventing the often unpleasant damp feeling associated with technical clothing.

The jacket is also fitted with a two-way YKK Vislon zip, protected against wind and rain, which makes it easy to regulate your temperature whilst on the move. In terms of practicality, it features three spacious rear pockets and a zipped pocket, ideal for storing keys or loose change. Finally, reflective elements enhance visibility and safety on the road, making this a jacket that’s as high-performance as it is reassuring.

Technical specifications:

- Colours: Deep Bordeaux/Clay, Light Black/Black, Brilliant Orange/Dark Grey, Mango Mojito/Black, Shadow Black, Electric Lime, Garnet
- Sizes: XS to XXXL
- Temperature range: -2°C – 10°C
- Weight: Ultra-light (effective insulation without added bulk)
- Fit: Tailored
- Insulation: Polartec Alpha – optimal warmth and breathability
- Water resistance: Light rain protection (DWR)
- Wind resistance: Full (front and back)
- Breathability: Exceptional thanks to Polartec AirCore
- Zip: YKK Vislon two-way, covered
- Pockets: 3 back pockets + 1 zipped pocket
- Reflective features: Piping at the bottom of the pockets for increased visibility
- Brand: Castelli

Size guide Castelli