Castelli Alpha 18 Socks - Green - L
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Product Information
Full details
The Castelli Alpha 18 Socks are designed for adult cyclists who demand superior thermal protection during cold-weather rides. By blending advanced PrimaLoft synthetic insulation with the natural moisture-wicking and thermal properties of merino wool, these socks keep your feet warm and dry even in challenging conditions. While they offer excellent technical performance, users should note that the 18 cm cuff height is specific to winter cycling needs and may feel more substantial than standard summer-weight socks.
All features
| Age Group | adult |
|---|---|
| Colour | Green |
| Gender | Unisex |
| Material | Merino Wool |
| Size | L |
| Model Part Number | 4521553075-LXL |
| Brand | Castelli |
Extended Product Information
FAQs
Are these socks suitable for temperatures below freezing?
Yes, the PrimaLoft and merino wool blend is specifically engineered for cold-weather cycling performance.
Can I use these socks for running?
While technically possible, they are optimized for cycling-specific footwear and the 18 cm cuff height is tailored for tight cycling leggings.
Do I need to size up my shoes to wear these?
Most users find them thin enough to fit in standard cycling shoes, but you may need to slightly loosen your shoe fit.
How do I maintain the merino wool properties?
Use a specialized wool detergent and always air dry to prevent fiber damage and shrinking.
Are they waterproof?
They are designed to be moisture-wicking and warm, but they are not waterproof. Use overshoes in wet conditions.
Troubleshooting
Socks feel too tight inside the shoe
Adjust your cycling shoe tension or boa dials to accommodate the thicker thermal fabric of the Alpha 18 model.
Material pilling after several washes
Wash the socks inside out in a mesh laundry bag to reduce friction against other garments.
Pros and Cons
Pros
- Superior warmth-to-weight ratio thanks to PrimaLoft technology
- Naturally odor-resistant merino wool blend
- Extended 18 cm cuff provides a seamless interface with cycling tights
- Quick-drying properties prevent moisture buildup
Cons
- Heavier feel compared to summer-weight racing socks
- Specific height might not suit all aesthetic preferences
- Requires careful laundering to maintain fabric integrity
Setup, Compatibility & Care
To ensure the longevity of your Castelli Alpha 18 Socks, it is recommended to wash them in cool water on a gentle cycle using a wool-safe detergent. Avoid using fabric softeners or bleach, as these can compromise the merino wool fibers and the effectiveness of the synthetic insulation. Always air dry the socks away from direct heat sources, such as radiators, to prevent shrinking or damage to the technical fabrics. Ensure your cycling shoes are properly adjusted for the slight increase in volume compared to ultra-thin race socks; if your shoes are already extremely tight, you may need to loosen the dials or straps slightly.