Castelli Alpha 150 2026 Winter Jacket

The best winter jacket. LThe Polartec® AirCore™ exterior protects from rain and wind, ensuring maximum breathability. LThe Polartec® Alpha™ interior offers additional insulation.

Technical features:

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

The best jacket for cold to frigid temperatures

Outer layer made with LCastelli's exclusive 150 g Polartec® AirCore™ membrane, impermeable to air and obtained by electrospinning, for industry-leading breathability

Very light internal layer in Polartec® Alpha™ for excellent insulation and breathability

Easy-sliding two-way YKK® Vislon® zip opening, with rain and wind protection

Zippered key/money pockets on front

3 back pockets

Reflective finishes at the bottom of the pockets

Alpha 150 Jacket is the ideal jacket for everything L'winter. Comfort. Without compromises. We set out to create the perfect cycling jacket for Lwinter, with LThe sole objective was to create the best possible jacket with the best fabrics and an innovative structure, which would guarantee comfort in the most disparate 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 your jacket. New for 2025, the Alpha 150 Jacket is made with LCastelli's exclusive Polartec® AirCore™: a windproof and waterproof fabric with unsurpassed breathability. LThe internal Polartec® insulation of the Alpha 150 Jacket guarantees warmth and better breathability. Thanks to the slim fit, you won't even notice you're wearing a winter jacket. This jacket is ideal for dry cold days and can withstand anything but heavy rain for a full day, in which case you'll probably need to resort to a rain shell. Lthe use of recycled yarns e LThe absence of PFAS are additional features that make this winter jacket the best ever made by Castelli.