Castelli Alpha Ultimate Insulated Cycling Jacket - Green
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Product Information
Full details
The Castelli Alpha Ultimate Insulated Cycling Jacket is designed for serious female cyclists who demand top-tier performance in harsh, cold-weather conditions. By utilizing a dual-layer construction with Polartec technology, this jacket provides an exceptional balance of breathability, stretch, and insulation, allowing you to regulate body temperature during intense climbs or freezing descents down to -5C. While it offers premium protection and fit, the specialized design and high-tech fabrics require careful washing to maintain their integrity over time.
All features
| Gender | Female |
|---|---|
| Age Group | adult |
| Colour | Green |
| Model Part Number | Castelli |
| Brand | Castelli |
Extended Product Information
FAQs
What is the recommended temperature range for this jacket?
This jacket is optimized for cold-weather cycling, performing best in temperatures down to -5C.
Does this jacket replace a rain jacket?
While it features a waterproof outer, it is primarily designed for insulation and wind protection. For prolonged heavy downpours, a dedicated shell may be more appropriate.
How do the two zippers work?
The inner layer is a lightweight vest/insulation piece that zips separately from the outer wind-shell, allowing you to open the shell to vent heat while keeping your chest insulated.
How should I store this jacket?
Store it hanging in a cool, dry place to ensure the fabric retains its shape and to allow any residual moisture to evaporate.
Are the pockets deep enough for a smartphone?
Yes, the rear pockets are designed for standard cycling gear, and the secure zippered side pocket is ideal for a smartphone or keys.
Troubleshooting
Feeling damp inside during high-intensity rides
Ensure your base layer is moisture-wicking and not cotton. Adjust your layering system to vent the outer shell sooner during climbs.
Water beading on the outer shell is failing
Reactivate the DWR (Durable Water Repellent) finish by tumble drying on low heat or using a recommended DWR spray treatment.
Pros and Cons
Pros
- Significantly lighter and stretchier than traditional winter jackets
- Independent dual-layer system allows for superior venting
- Effective thermal regulation for temperatures down to -5C
- High-quality weather protection with waterproof outer shell
- Excellent anatomical fit tailored for cycling positions
Cons
- Requires delicate maintenance to protect fabric performance
- Premium technology reflects a higher investment level
- Not intended for extreme rain conditions, focusing more on wind and thermal insulation
Setup, Compatibility & Care
To ensure the jacket performs as intended, pair it with a high-wicking base layer to assist in moisture management. The jacket is anatomically cut for a cycling position, so ensure you check the fit while in your riding tuck. For care, always wash the jacket in cold water on a delicate cycle. Use a technical detergent suitable for waterproof/breathable membranes, as standard soaps can clog the pores of the Polartec fabrics. Avoid fabric softeners entirely and hang-dry the garment in a well-ventilated area away from direct sunlight to preserve the elastic properties and water-repellency treatments.