Nano Flex 3G Leg Warmer
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Nano Flex 3G Leg Warmer
A good pair of leg warmers will give you that extra bit of warmth you need to stay comfortable on chilly spring and fall rides, but unlike full-length tights, you can easily slip them off and stow them in a jersey pocket when cold mornings transition into mild afternoons. These particular warmers use a water-repellent fabric that prevents light rain and road spray from soaking through, but are also highly breathable, making them a great option for dry days too.
Details
- Rain or shine, wet or dry, these warmers will do the trick
- Water-repellent fabric keeps you warm and dry during your ride
- Breathable construction prevents clamminess and overheating
- Single, flat-lock seam ensures maximum comfort
- Double-sided silicone gripper keeps the warmers in place
- Easy to take off and stow in a jersey pocket if things warm up
- Recommended for temperatures ranging from 54 - 68-degrees Fahrenheit
- Item #CST00UI
- Material
- Nano Flex 3G
- Fit
- form-fitting
- Claimed Weight
- [pair] 4.2oz (119g)
- Recommended Use
- road cycling
- Manufacturer Warranty
- 1 year
Reviews
Q&A
What do you think about this product?
Overall Rating
4 based on 7 ratings
Review Summary
Fits True To Size
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.View
Selecting an option will reload the available reviews on the pageJanuary 6, 2025
Good for the Seattle WA area
- Familiarity:
- I've used it several times
- Size Bought:
- X-large
Fit is good and seems to keep me dry and warm in light showers. I have about a 36" waste, and 30" inseam, and I wear size X-large in Castelli. Back in the day, I was a Cat 2 masters bike racer.
January 2, 2025
Castelli Leg Warmers
- Familiarity:
- I've used it once or twice and have initial impressions
Bought these a few wks ago given the coming cold months in New England. Worn them once on a 10 miles ride in 35-40 degree weather. Warmers were plenty warm enough but continually migrated down my thigh ending up below my knee. Pulled them both up a few times to as high as they would go on my bid shorts - still ended up down below my knees. Ended up buying bid leggings from local bike shop....Size: large, I am 6'1" 181 lbs...
Originally reviewed on Competitivecyclist.com
December 19, 2024
3G NanoFlex is better than predecessor
- Familiarity:
- I've used it several times
This is an improvement from previous generation NanoFlex which I soaked through on a rainy ride last year. I threw water on these and it beaded up and fell off. Sizing is fine. I have XL and generally use XL in Castelli, Assos and Craft. I need 2XL in Castelli tights for my long legs/shorter torso 73.5”, 200 lbs frame. They were not too short for me. I tried putting Nikwax Tx direct waterproofing on the old ones, but it didn’t help. Happy trails; hope this is useful.
Originally reviewed on Competitivecyclist.com
December 9, 2024
Castelli Nano flex Leg warmers
- Familiarity:
- I've used it once or twice and have initial impressions
Just wore these in 40 F weather here in CT. Kept my knees/legs reasonably warm. ISSUE is these slid down from the top of my thighs to below my knees after 6-7 minutes of pedaling! Pulled them up repeatedly and they continued to slide down past my knees! Yes, these are sized correctly as I am 6'1", 182#, bought size XL. Very snug at calf and snug on my thighs but continue to slide down my bib shorts...Very frustrating, would not recommend these. thnks
Originally reviewed on Competitivecyclist.com
May 30, 2024
Leg warmers
- Familiarity:
- I've used it several times
I Bought them a month ago And I love them.
Originally reviewed on Competitivecyclist.com
November 12, 2021
Warm and comfortable
- Familiarity:
- I've used it several times
Normally, I am only motivated to write reviews of merchandise that I truly love or hate. That's the case here. I love these for their comfort, fit, quality, and warmth. Additionally, as with any cycling cold-weather gear, it is important to be able to peel it off and stow it as the day warms up. In this part of the country, we ride the entire year. In spring, fall and winter we are almost always COLD at the start and often HOT at the end of the ride. That's why these are a more practical purchase than insulated knickers or insulated tights -for me anyway. Others have complained about the zipper rubbing a sore spot on their ankle. I have never had that problem.
Originally reviewed on Competitivecyclist.com
November 14, 2020
Deserves their reputation...
- Familiarity:
- I've put it through the wringer
Castelli gear isn't cheap. But I've tried a lot of leg warmers over the years and none do the job as well as the Castelli Nano Flex 3G. I have three pairs (rotation) and they're my "go to" accessory for mid-Fall to late-Spring. Sure, if serious winter temps arrive, they may not be enough, but last year nano-flex warmers got a workout Nov-Mar. And I especially appreciate how well they stay up too. Entering my second full season with them...
Originally reviewed on Competitivecyclist.com
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