- Ultimate warmth in various conditions
- Water repellent for damp weather
- Comfortable fit for extended wear
- Proprietary Nano Flex fabric technology
- Excellent thermal insulation properties
Nano Flex warmers are great in dry conditions but also give some extra protection and warmth in wet conditions. Castelli invented the category of water-protective thermal fabrics, and their proprietary Nano Flex is often imitated but never equalled. No compromises for any conditions.
Features: | Temperature Range: 8°C - 20°C / 46°F - 68°F |
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Weight: | 166g |
Castelli Women's Clothing Sizing Chart
Please note: Castelli clothing is slightly smaller than traditional standard sizes. Please refer to the size chart below for ensure a perfect fit.

Since 1876, Castelli has been the tailor for the cycling champions. It was the innovative mindset which brought the earliest heroes to them; legends like Binda, Coppi and Bartali.
Castelli invented the first Lycra shorts used in racing, the first sublimation printed jerseys, the first use of windproof membranes, the first anatomic seatpad, the lightest jersey ever produced, and the most aerodynamic jersey ever produced.
Today, Castelli continue this innovative tradition for the cyclist seeking maximum performance.
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