Ride through the seasons, or changing conditions from morning to night, with Castelli's versatile Nano Flex 3G armwarmers.
Great when it's dry and chilly but also affording extra protection and warmth against wind gusts and fall drizzles, Nano Flex warmers are easy to put on, and just as easy to take off and pack away when the weather improves.
A decade in development, Nano Flex gave birth to the category of water-protective thermal fabrics, and Castelli's proprietary and game-changing invention is often imitated but never equaled.
In non-precipitating conditions, the proprietary third-generation material is stretchy, breathable and soft thanks to its fleeced inner face. Pedal into the elements, though, and the durable surface, which is enhanced with a chemical water-repellent finish, keeps moisture grounded in the no-fly zone.
For those times when you won't accept compromises under any conditions, choose Nano Flex 3G warmers.
Features & Specs:
Returns: Openbox, B-Stock, and Closeout products can be returned within 60 days for store credit.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
This product is NOT Eligible for VIP Points.
| S | M | L | XL | 2XL | 3XL | |
| Chest | 36¼" | 37¾" | 39½" | 41¼" | 43¼" | 45¼" |
| Waist | 31½" | 33" | 34½" | 36½" | 38½" | 40½" |
| Hips | 37" | 38½" | 40" | 42" | 44" | 46" |
| Inseam | 32¼" | 32.67" | 33" | 33½" | 33.85" | 34¼" |
Black - Small | Mfg PartNum: P19529010-2 |
Black - Medium | Mfg PartNum: P19529010-3 |
Black - Large | Mfg PartNum: P19529010-4 |
Black - X-Large | Mfg PartNum: P19529010-5 |
For pretty much everything else I wear Castelli L(arge) size (bibs, jersey, jackets, etc) so I thought I should get an L for the arm warmers too (it doesn't help that Castelli does not publish a sizing guide that considers hand length/circumference). Well, that was wrong, the L warmer barely sits on my hand, it's probably not going to slip on its own but it doesn't feel like it sits firmly on the hand either. Next time I'll get an M...
The other problem is that some of the stitching has already started to come off after 3 wash cycles (I use the lightest setting on the washing machine for bike clothing). I think my cheaper Pearl Izumi warmers held longer.
I'm in love w these arm warmers. Can I marry them?!? Maybe I can get a marriage tax break!!
All fooling aside, I love these things. They are super warm and super comfy. They have excellent grip so I've never had a problem w them sliding down. Not even a little. I would definitely buy again if they ever wear out. Good luck on them doing so. Or buy as a gift. Make an amazing gift. I bought these With my own money for myself for cool MN rides in late fall. I seriously would not even look at another brand. Simply amazing!
I've used these in damp weather (including with a short sleeved jersey under a winter jersey) into the high 30s; so far I've not used them alone in rain so I can't speak to the reputed water resistance. They fit well, stay up, and are warmer than others I've had-the fleece inside is great.
Works great on cold days, and especially with a light rain where it keeps the arms pretty dry. Was a great combination with my Castelli Perfetto RoS Light Jersey while cycle touring with several chilly days with a drizzle and light rain.
