Lightweight and breathable
6 to 20°C - Warmth, comfort and protection from the rain
Castelli's benchmark arm warmers have been further improved for even greater effectiveness!
Textile expert and former professional runner
Nano Flex gear has been part of the Castelli catalogue for eight years now. Improvements have been made continuously to this gear, even though it already seemed perfect. Castelli products using the Nano Flex process are ideal for keeping you warm in dry weather, and they also offer additional protection and increased warmth in wet weather! The Nano Flex 3G Arwarmer arm warmers are still made with Nano Flex fabric, whose resistance to moisture and cold is well established. Note that Nano Light inserts have been added to the flex zones for improved comfort and an optimised fit. These arm warmers also feature non-slip silicone printing to ensure a perfect fit during exercise.
- Warm, moisture-resistant Nano Flex fabric
- Non-slip silicone prints
- Recommended temperatures: 8° to 20°C
- Weight: 66 grams per pair
- Sizes: S, M, L, XL
- Colours: Black
Castelli size guide
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We value your opinion
Based on 8 reviews
Sensitive on the arms, these "nano flex" sleeves fulfill exactly what I was looking for against the wind and humidity. Moreover, the fabric is very pleasant and of good visual quality, I do not regret my purchase, I took size S, I am 175 cm tall, I have fairly long arms and medium diameter. (Translated review)
CASTELLI sleeves of very good quality. Used in dry and cool weather. Gets the job done. To see under the rain. (Translated review)
Comfortable, warm, and pleasant to wear. I have long thin arms, I took size M: perfect! Ultra fast delivery (Translated review)
Top product, Castelli quality. These arm warmers are very comfortable and effective. (Translated review)
Very good arm warmers. They protect very well and do not slip. Castelli quality! (Translated review)
These arm warmers are warm, water-repellent. I hope they will maintain their qualities over time. The size 'S' fits me, and they are long enough for my long thin arms (size 1m87). (Translated review)
Not disappointed with this brand, very practical technical product for the off-season (Translated review)
The quality, flexibility, and comfort against humidity of these sleeves are very pleasant. Recommended for the coming months (Translated review)
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