To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The Castelli Nano Flex 3G Arm Warmers are a stalwart of your winter cycling kit – rain repellent, windproof, warming and luxuriously comfortable, this latest evolution of the Nano Flex technology is Castelli’s best yet
The Castelli Nano Flex 3G Arm Warmers are a stalwart of your winter cycling kit – rain repellent, windproof, warming and luxuriously comfortable, this latest evolution of the Nano Flex technology is Castelli’s best yet
Castelli

Castelli Nano Flex 3G Armwarmer in Black

£49.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

No-quibble returns policy

We guarantee to replace or refund faulty products covered by manufacturers warranty subject to inspection of goods and manufacturers approval.

We will replace or refund goods which don't fit or are unsuitable provided the goods are returned unused and in the original packaging within 28 days of delivery.

The quickest option is to drop the stock back to us in store along with a copy receipt but alternatively we have made the online returns process as simple as possible for you.

1)            Give us a call on 0208 6796197 or email us to say you're sending something back

2)            Pop a note in, together with a copy receipt, with the item to say whether you'd like a refund or an exchange for a different product

3)            Post it back to us at De Ver Cycles, 632-636 Streatham High Road, London, SW16 3QL and make sure you get a proof of postage

4)            The item is your responsibility until it reaches us. For your own protection, we recommend that you send the parcel using a delivery service that insures you for the value of the goods.

5)            The cost of returning the item to us is your responsibility.

6)            The parcel can take up to 7 working days to be processed once received.

Promotional items: When returning items that were purchased online as part of a ‘Buy One, Get One Free’ offer, 'Buy One, Get One Half Price' offer, '3 for 2' offer, or a 'Buy , Get a Free' offer, all of the items involved in the offer must be returned.

When returning goods, if no fault is found we do not refund delivery charges and may charge for collecting the goods if they are not brought into our store.

All Custom Builds and 'Made to Order' items require a 20% deposit on order, with the balance payable at pick-up/delivery and are, unless faulty, non-refundable.

Deposits on Special Order Items are non-refundable.

Items ordered specially into store will be held in-store for 14 days from the time that customers are notified that they are available for pick-up (unless otherwise agreed). If goods are not collected in that time they will added to shop stock and made available for general sale, deposits are non-refundable.

Castelli Nano Flex 3G Armwarmer in Black

Season:2026

Brand:Castelli

Code:CS19529BLK

The Nano Flex 3G fabric used across these arm warmers utilises a combination of newly updated durable water repellent (DWR) treatment and mechanical heat treatment to give previously unheard-of levels of rain protection.

Light rain beads off the fabric, keeping you dry when those inevitable rainy spells descend.

On the inside of the Nano Flex 3G fabric, a super soft finish and the optimal loft have been achieved through Castelli’s meticulous research and development. The fabric feels phenomenally comfortable against the skin and the loft traps just the right amount of air above the skin to keep your heat regulated over a wide range of autumn and winter conditions.

This latest update to the Nano Flex fabric not only reflects Castelli’s ongoing commitment to offering you the very best garment quality but crucially means more time enjoying yourself on the bike.

The flat-lock stitching and single-seam construction keep the profile of the warmers low and the stretch is optimised for maximal freedom of movement. A dual-sided silicone gripper at the upper end secures the warmers in place. The compact size of the warmers makes them easy to stuff into rear pockets when conditions lighten up.

Features:

  • Newly updated Nano Flex 3G fabric for exceptional warmth, softness and protection from the rain
  • Minimal seam construction for aesthetic versatility and freedom of movement
  • Easily packable into a pocket
  • Highly breathable
  • Optimal temperature range is 8˚C – 20˚C
Sizing Information
Professional Opinion
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for Castelli Nano Flex 3G Armwarmer in Black

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about Castelli Nano Flex 3G Armwarmer in Black
Ask a question
Question(s) asked regarding Castelli Nano Flex 3G Armwarmer in Black

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Cycling Clothing Castelli Warmers