Castelli Cold Days W 2nd Layer

✔ Maximum insulation and moisture management for cold rides, to layer between a base layer and a jacket
✔ Polartec® Alpha® 90 fabric high-loft active insulation made from recycled PET
✔ Maximum breathability
✔ Asymmetrical zip
✔ High collar
✔ 90 g (S)
✔ -8°-5°C / 18°-41°F