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Castelli Thermoflex Classic Knee Warmer

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Item # CST0106

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Item # CST0106

Extend the temperature range of your biking shorts with Castelli's Thermoflex Knee Warmers.

If you ever wish your bike shorts could magically grow to cover your knees when it gets cold, or that your pants could shrink up for spring riding, grab the Castelli Thermoflex Knee Warmers. These stretchy fleece warmers cover your knees, so you can pair them with your riding shorts on chilly days. Elastic on the cuffs of the Thermoflex Knee Warmers gives them a solid fit, while Castelli's scorpion logo adds eye-catching detail.

  • Stretch synthetic
  • Moisture-wicking
  • Fleece lined

Tech Specs

Material:
stretch synthetic, fleece lining
Fit:
form
Recommended Use:
cycling
Manufacturer Warranty:
1 year

Size chart

Castelli

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

Reviews & Community

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I'm 6'2 168lb with pretty dang skinny legs. What size do you suggest? I'm guessing medium but I typically size up in castelli... Thoughts?

Greetings - would go with a Large - as your inseam will most likely need the extra length ;)

nothing fancy but get the job done

  • Familiarity: I've put it through the wringer

I bought these a year ago. they have a simple design but the brushed fleece is comfortable and adds to warmth. I use them in temps from the mid-40s to 60. 5'8" 145lbs and purchased size medium

Avg. ride time: 11h 28m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Oh so cozy

    Love these for those crisp morning rides where leg warmers would just be too much, but flying bare would be too uncomfortably chilly. These are made of a quality and cozy material, and come at a surprisingly low price for Castelli. I am 5'10 160lbs and found the medium to fit perfectly.

    Avg. ride time: 3h 33m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    What size do I need? I am 5'10 150 ibs

    What size do I need? I am 5'10 150 ibs

    Best Answer

    Medium should fit you spot on :)

    I'm the same size and mediums are just right.

    my husband had knee surgery and the cold...

    my husband had knee surgery and the cold really gets to his knees. Will these help or are they just for bile riders

    They should work for anyone that needs to keep their Knees warm. He may have problems with them falling down because of no Lycra short holding them up.