Castelli Alpha 150 jacket

The Alpha 150 Jacket is the jacket made so you can ride all winter long. Comfortably. No excuses

Castelli set out to make the ultimate winter riding jacket — a singular goal to make the best jacket they could, featuring the best fabrics and innovative construction, and ensuring comfort in the widest range of conditions, including cold and wet. The Alpha 150 is the result of 12 years of continual refinement of a concept to keep you warm and dry, both inside and out. New for 2025, the Alpha 150 Jacket now uses Castelli’s exclusive Polartec® AirCore™ fabric for unmatched breathability in a windproof and rainproof fabric. On the inside, Polartec’s Alpha insulation provides warmth while enhancing moisture management. The stretchy close-to-body fit means you don’t feel like you have a full winter jacket on. This jacket is ideal for cold, dry days yet can stand up to everything except all-day driving rain, when you’ll probably reach for a rain shell. The fact that it uses recycled yarns and is PFAS-free is a bonus feature of the best winter jacket they’ve ever made.

Features

• The best jacket for cold to very cold conditions
• Outer layer made from Castelli’s exclusive 150 g Polartec® AirCore™ electrospun air-permeable membrane gives industry-leading breathability
• Polartec® Alpha™ inner liner for significant insulation at extremely light weight with excellent moisture management
• Top- and bottom-opening YKK® Vislon® zipper for easy sliding, covered for additional wind and rain protection
• Zippered key/money pocket on front side
• 3 rear pockets
• Reflective piping at bottom of pockets
• Insulation: 4/5
• Waterproofness: 4/5
• Windproofness: 5/5
• Breathability: 3/5
• Lightness: 4/5
• Temperature:-2°C - 10°C / 28°F - 50°F

Technologies

Polartec® AirCore®
Thanks to the unique combination of breathability and Polartec nanofibre membrane, Polartec® AirCore™ fabric keeps you dry without sacrificing the benefits of windproof and water-repellent properties. This cutting-edge technology uses air to maintain a dry microclimate by evaporating sweat to the outside.

RoS - Rain or Shine
RoS guarantees an uncompromising approach to the best garments in dry conditions, which are almost as water-resistant as a raincoat without sacrificing breathability and ventilation.

Rosso Corsa
The Rosso Corsa label is only applied to the most technologically advanced products. Rosso Corsa represents a major step forward in innovation and reflects the meticulous construction you expect from Castelli to improve athlete performance.

Size S / Colour Light Black - Black

Size M / Colour Light Black - Black

Size L / Colour Light Black - Black

Size XL / Colour Light Black - Black