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Castelli Nano Flex 3G Arm Warmer

The Castelli Nano Flex 3G is the ultimate arm-warmer. Warm and comfortable in dry conditions, water repellent in damp conditions, and still warm in extreme conditions.

This product is currently out of stock and unavailable.

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The Nano Flex 3G Arm Warmers from Castelli are the perfect accessory for adding extra warmth with your short sleeve jerseys. Easy to pack and ideal for keeping your arms dry should the weather take a turn for the worst on your rides.

Whether you’re racing or training in changeable conditions, it can be difficult to decide whether to go out in a long sleeve or short sleeve jersey. The Castelli Nano Flex 3G Arm Warmers gives you the best of both worlds. For cooler and damp conditions, slip them on to provide extra warmth and wet weather protection from the water repellent finish on the fabric. Should the clouds break, and the sun shows up, they’re easy to take off and stow in a back pocket.

Note: The Castelli Thermoflex 2 Arm Warmers come as a pair.

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Spain Europe North America Asia & Oceania Rest of the World
Standard Free Free €25 €40 €40
Bulky Free Free €80 €80 €80
Bike Free Free €200 €280 €280
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Additional information


L, M, XL, S






Women, Men