Product features
- Water-repellent thermal and breathable Nano Flex fabric
- Flat-lock stitching with single seam
- Double-sided silicone grippers to keep warmers in place
- Water-repellent thermal and breathable Nano Flex fabric
- Flat-lock stitching with single seam
- Double-sided silicone grippers to keep warmers in place
Technical Features
- Temperature:8°C - 20°C / 46°F - 68°F
What It Is
Nano Flex for the ultimate warmer: warm and comfortable in dry conditions, water repellent in damp conditions, and still warm in extreme conditions.

Garment supplied to the Soudal Quick-Step Team riders.

Exclusively engineered by Castelli. We take our thermal fleecy stretch Thermoflex fabric and coat it with millions of tiny nanofilaments to create the most water-repellent fabric finish ever. Drops of water stay as spherical balls on top of the fabric or bounce off the fabric without leaving a trace.
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