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Nano Flex Evo Armwarmer
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The Nano Flex Evo Armwarmer shrugs off drizzle and stays put all day
What Our Gearhead® Experts Are Saying:
"I threw these on before a ride that started dry but turned into a light drizzle halfway through, and they never soaked through or slid down my arms. The single-seam construction meant zero chafing even after a few hours. These live in my saddle bag from here on out."
Weather doesn't always ask permission before it changes, and neither should your kit have to change with it. The Castelli Nano Flex Evo Armwarmer rolls on in seconds when a morning starts cooler than expected, or clouds roll in out of nowhere, giving you water-repellent coverage without committing to a full jacket you'll regret once the sun comes back out.
Double-sided silicone grippers keep these from sliding down your arms on longer climbs, and flat-lock stitching with a single seam means comfort holds up even after hours in the saddle. This is the kind of gear that disappears into the background of a good ride, doing its job so you can focus on everything else.
Details
- Thermal armwarmer built for shifting fall and spring weather
- Nano Flex fabric repels light rain and morning damp
- Flat-lock single seam construction prevents chafing on skin
- Double-sided silicone grippers keep warmers from sliding down
- Packable design fits easily in a jersey pocket
- Item #CSTZ85E
- Material
- Nano Flex
- Fit
- form-fitting
- Closure
- pull-on
- Manufacturer Warranty
- limited 2 year
- Activity
- road cycling
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Frequently Asked Questions
What conditions suit the Castelli Nano Flex Evo Armwarmer?
Its thermal Nano Flex fabric is suited to cool road rides from 8°C to 20°C (46°F to 68°F), including light rain and morning damp. It is not intended for sustained rain or immersion.What materials make up the Castelli Nano Flex Evo Armwarmer?
The main fabric is 54% polyamide, 29% polypropylene, and 17% elastolefin; the top hem is 80% polyamide and 20% elastane. This stretch-fabric construction supports a close, tailored fit for cycling.How does the Castelli Nano Flex Evo Armwarmer stay in place while riding?
The tailored fit, double-sided silicone grippers, and single flat-lock seam help limit slipping and chafing during repeated arm movement. It is available in sizes S, M, L, and XL.Can the Castelli Nano Flex Evo Armwarmer be packed away when the ride warms up?
Yes. Its packable design fits in a jersey pocket, making it practical to remove as conditions shift within its 8°C–20°C (46°F–68°F) temperature range.How should I wash the Castelli Nano Flex Evo Armwarmer?
Machine wash it at 30°C with similar colors; tumble dry on low or cool if needed. Avoid fabric softener and excessive heat to help preserve the Nano Flex fabric’s water repellency.