Alpha 150 W Jacket is the jacket that ensures you can ride all winter long. With comfort. With no excuses. Our goal was to develop the ultimate jacket for winter riding - a clear vision to create the best jacket possible, using the best fabrics and an innovative design that ensures comfort in a wide range of weather conditions, including cold and wet. The Alpha 150 is the result of 12 years of continuous optimization of a concept that keeps you warm and dry inside and out.

2025 new in the Alpha 150 W Jacket: Castelli's exclusive Polartec® AirCore™ fabric for outstanding breathability, windproof and rainproof. Inside, Polartec's Alpha insulation provides warmth and regulates moisture. The stretchy, close-fitting design means you won't even notice you're wearing a full winter jacket. This jacket is ideal for cold, dry days and yet can withstand anything short of constant rain, which would make you reach for a rain jacket anyway.

A great bonus feature of the best winter jacket Castelli has ever developed: it is made from recycled fibers and is PFAS-free.

Features of the Castelli Alpha 150 Jacket Women:

• Outer layer made from Castelli's exclusive 150g Polartec® AirCore™ electrospun breathable membrane for industry-leading breathability
• Polartec® Alpha™ lining for high insulation with extremely low weight and excellent moisture management
• Top and bottom opening YKK® Vislon® zipper for easy gliding, covered for additional wind and rain protection
• Zippered pocket for keys/money on the front
• 3 back pockets
• Reflective piping on the bottom of the pockets

Material
Main fabric: 100% polyester
Neck, cuffs: 52% polyamide, 32% polyester, 16% elastane
Bottom torso: 70% polyamide, 30% elastane
Lining: 100% polyester