Sous-maillot seconde couche hiver Castelli Cold Days 2nd Layer Vest 2027

Castelli ’s Cold Days 2nd Layer Vest is designed to enhance thermal insulation during cold-weather rides. Worn between a long-sleeved base layer and a jacket, it provides extra warmth around the torso without restricting freedom of movement. Made from Polartec Alpha 90, an active insulation fabric made from recycled PET, it offers an excellent balance between insulation and breathability to maintain a stable body temperature even when the intensity of your ride varies.

Thanks to its ability to wick moisture away quickly, this mid-layer prevents the build-up of sweat and helps maintain a comfortable feel throughout your ride. It provides up to 5 °C of thermal comfort, making this gilet an ideal solution for extending the season and tackling the chilliest days without adding bulk to your outfit.

Technical specifications:

- Winter second-layer base layer Castelli Cold Days 2nd Layer Vest
- Colour: Black
- Size: XS to XXXL
- Recommended temperature range: -4°C to +10°C
- Fit: Regular
- Warm and breathable Polartec Alpha 90 fabric
- Made from recycled PET
- Provides a 5°C temperature boost
- Worn between a jacket and an undershirt in winter
- Weight: 128 g
- Brand: Castelli 

Size guide Castelli