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Castelli Thermoflex Leg Warmer


Item # CST00GN

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  • Black, S ($49.95)
  • Black, M ($49.95)
  • Black, L ($49.95)
  • Black, XL ($49.95)
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Item # CST00GN

Warm legs are strong legs.

Your legs are your engine, but you can't expect them to work their best if you leave them bare in the cold. Let Castelli's Thermoflex Leg Warmers stand between your gams and the crisp spring air around them, and you'll enjoy less likelihood of muscle tightness and discomfort when you're out on long rides. Soft Thermoflex fleece holds a layer of heat from your quads to your Achilles, and it remains breathable when you break a sweat on a tough climb, while a top gripper elastic keeps everything in-place.

  • Protect your engine on cold rides with this leg warmer
  • Plush fleece fabric wicks moisture while it insulates
  • Form-fitting cut and gripper elastic prevents slippage
  • Cross-wrap cuff at bottom for a comfortable fit

Tech Specs

Thermoflex fleece
Claimed Weight:
[pair] 121g
Recommended Use:
Manufacturer Warranty:
1 year

Size chart


Arm and Knee Warmers
Rider Weight 99.2 - 132.3lbs
(45 - 60kg)
132.3 - 154.3lbs
(60 - 70kg)
154.3 - 176.4lbs
(70 - 80kg)
Short Size XS - M S - M L - XL 2XL - 3XL
Short Size:
Take your typically cycling short or bib sizing for comparison.

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Best leg warmers!

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Small

Obsessed with these. Really long and have nice grip strip on both the inside and the outside of the warmer to keep them from slipping. There is also a neoprene cuff on the bottom of the leg to keep your legs extra toasty. Have worn these twice so far (both in temps below 40 degres and snowing, spring in Salt lake city!! haha) and they held up great! Really loving how they stay put throughout the whole ride. Only complaint is that there is a MASSIVE tag on the inside of the right warmer. Like this thing is insanely huge. I cut it and now its a little itchy but not terrible. Other than that, solid warmers to keep you toasty warm on your chilly rides.

Sizing: I am 5'11'' 148lbs with pretty skinny legs. The small fits me well and they don't sag down.