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  • Castelli - Nano Flex 3G Knee Warmer - Black

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Castelli Nano Flex 3G Knee Warmer


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    • Black


    2 Reviews


    Nano Flex 3G Knee Warmer

    Castelli was an early pioneer of water-protective thermal fabrics, having recognized just how beneficial they are for cycling applications. Don't assume these knee warmers are exclusively for rainy rides on wet roads, however, as the water-repellent fabric is also highly breathable, making them a great option for cooler dry days, too. The best part is if the sun comes out, you can easily slip them off and stow them in a jersey pocket, unlike knickers and full-length tights.

    • Knee warmers that work well for both wet and dry conditions
    • Nano Flex fabric keeps you warm and dry throughout the 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 #CST00UM

    Tech Specs

    Nano Flex 3G
    Claimed Weight
    [pair] 89g
    Recommended Use
    road cycling
    Manufacturer Warranty
    1 year

    Tech Specs

    • Reviews
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    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Medium
    • Height: 6'1"
    • Weight: 152lbs

    Nothing bad to say about these - fit is spot on, warmer than my Pearl knee warmers, snug, stay in place. I'd buy another set in a heartbeat.

    Ripped Putting Them On....The First Time

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: L
    • Height: 5'11"
    • Weight: 190lbs

    What a garbage product. Pulled them out of the wrapping & put them on to ride & the fabric came unattached from the gripper. This is my last go around w Castelli, the quality is non-existant with their products now.