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Castelli Alpha 150 Cycling Jacket - Men's
Colour
Size
Size
OS
The best cold weather jacket. Polartec® AirCore™ outer layer keeps out wind and rain while remaining highly breathable. Polartec® Alpha™ inside adds insulation.
The Alpha 150 Jacket is the jacket made so you can ride all winter long. Comfortably. No excuses. We set out to make the ultimate winter riding jacket-a singular goal to make the best jacket we 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 we’ve ever made.
Features
• Tailored fit
• The best jacket for cold to very cold conditions
• Outer layer made from Castelli’s exclusive 150g 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
Specifications
• Temperature: -2°C-10°C/28°F-50°F
• Insulation: 4/5
• Waterproofness: 4/5
• Windproofness: 5/5
• Breathability: 3/5
• Lightness: 4/5
The Alpha 150 Jacket is the jacket made so you can ride all winter long. Comfortably. No excuses. We set out to make the ultimate winter riding jacket-a singular goal to make the best jacket we 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 we’ve ever made.
Features
• Tailored fit
• The best jacket for cold to very cold conditions
• Outer layer made from Castelli’s exclusive 150g 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
Specifications
• Temperature: -2°C-10°C/28°F-50°F
• Insulation: 4/5
• Waterproofness: 4/5
• Windproofness: 5/5
• Breathability: 3/5
• Lightness: 4/5
Breathable
Yes
Insulation Type
Synthetic
Jacket Length
Mid - Hip
Jacket Style
Active
Material
Synthetic
Temperature Rating
5°C to -10°C
Weather Proofing
Wind Resistant, Water Resistant
The best cold weather jacket. Polartec® AirCore™ outer layer keeps out wind and rain while remaining highly breathable. Polartec® Alpha™ inside adds insulation.
The Alpha 150 Jacket is the jacket made so you can ride all winter long. Comfortably. No excuses. We set out to make the ultimate winter riding jacket-a singular goal to make the best jacket we 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 we’ve ever made.
Features
• Tailored fit
• The best jacket for cold to very cold conditions
• Outer layer made from Castelli’s exclusive 150g 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
Specifications
• Temperature: -2°C-10°C/28°F-50°F
• Insulation: 4/5
• Waterproofness: 4/5
• Windproofness: 5/5
• Breathability: 3/5
• Lightness: 4/5
The Alpha 150 Jacket is the jacket made so you can ride all winter long. Comfortably. No excuses. We set out to make the ultimate winter riding jacket-a singular goal to make the best jacket we 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 we’ve ever made.
Features
• Tailored fit
• The best jacket for cold to very cold conditions
• Outer layer made from Castelli’s exclusive 150g 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
Specifications
• Temperature: -2°C-10°C/28°F-50°F
• Insulation: 4/5
• Waterproofness: 4/5
• Windproofness: 5/5
• Breathability: 3/5
• Lightness: 4/5
Breathable
Yes
Insulation Type
Synthetic
Jacket Length
Mid - Hip
Jacket Style
Active
Material
Synthetic
Temperature Rating
5°C to -10°C
Weather Proofing
Wind Resistant, Water Resistant