Castelli Alpha 150 Jacket 

Alpha 150 Jacket is the perfect jacket for all winter. Comfort. Without compromise.
We decided to create the perfect winter cycling jacket with the sole goal of making the best jacket possible with the finest fabrics and an innovative structure, ensuring comfort in the most diverse conditions, including cold and humidity.
Alpha 150 is the result of 12 years of continuous refinement of a concept designed to keep you warm and dry, both outside and under the jacket.
New for 2025, the Alpha 150 Jacket is made with Castelli's exclusive Polartec® AirCore™ fabric for unmatched breathability, without sacrificing wind and rain protection. The internal Polartec® insulation in the Alpha 150 Jacket guarantees warmth and better breathability. Thanks to its tailored fit, you won’t even notice you’re wearing a winter jacket.
This jacket is ideal for cold, dry days and can withstand everything except heavy rain all day long, in which case you’ll likely need a rain shell. The use of recycled yarns and the absence of PFAS are additional features that make this winter jacket the best Castelli has ever made.

• The best jacket for cold to severe temperatures
• The outer layer is made with the exclusive 150 g Polartec® AirCore™ Castelli membrane, air-impermeable and produced through electrospinning, providing industry-leading breathability.
• The ultra-light inner layer in Polartec® Alpha™ ensures excellent insulation and breathability.
• Bi-directional YKK® Vislon® zipper with easy glide, offering protection from rain and wind.
• Front zippered pockets for keys/money.
• 3 rear pockets.
• Reflective finishes at the bottom of the pockets.

Weight: 352 g
Temperature: -2°C - 10°C / 28°F - 50°F
Fit: Tailored