Castelli NanoFlex Knee Warmer

Castelli Clothing



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When the conditions are changeable, cycling knee warmers are your best friend on the road, offering much needed weather resistance and warmth right when it's needed, and the Castelli NanoFlex Knee Warmer is a great example in this genre.

Offering a wind resistant outer is pretty standard, but for the NanoFlex Knee Warmer, things get really interesting when it starts raining and its water repellent properties come into play. Whilst not full-on rain proof, they will repel showers, which on fast descents or long stretches far from home, can be a really handy feature. Smooth, stretchy and highly breathable, they are great in every ride condition. A silicon top gripper completes the warmer.

Product features
  • Wind Resistant
  • Water Resistant
  • Open Road
  • Water-resistant NanoFlex fabric
  • Warm, stretchy and breathable
  • Great in every possible ride condition
  • Silicon top gripper for a non-slip fit
  • 79g (pair)
Rider Reviews (1)
1 rider recently bought or want this item
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  • Giles Councell United Kingdom 10•06•2015
    Giles Councell United Kingdom 10•06•2015
    Keeps the knees toasty for those early mornings
    0 out of 0 riders found this review helpful.
Castelli apparel used to size small small, but over the last few seasons they have restructured their size set for a more international rider base. Therefore, please follow the sizing chart with confidence, but if in doubt, then feel free to go up a size if you are looking at a very aero-style piece.
MEN (inches / cm) S M L XL XXL
chest 36-38 / 92 38-40 / 96 40-42 / 100 42-44 / 105 44-46 / 110
waist 31 / 80 33 / 84 34 / 88 36 / 93 38 / 98
inseam 31.8 / 81 32 / 82 32.7 / 83 33 / 84 34 / 85
chest 79 84 89 94 99 104
waist 63 68 73 78 83 88
hips 87 92 97 102 107 112
inseam 75 76 77 78 79 80
palm size (inches) 9.5 9.8 10 10.5 10.8
*For an accurate glove size, please measure across your flat open palm just below the fingers, then compare your measurement to the chart above. If it's a close call, go one size up or down depending on the result.

shoe size (Euro) 36-39 40-43 44-47
Shoe Covers S M L XL XXL
shoe size (Euro) 36-39 40-42 43-44 45-46 46-48

Where is my order sent from?

All orders are packed & shipped from our HQ in South West London the same day you order, if in stock and ordered before 3pm GMT Monday to Friday. That's just how we like to roll!

Delivery Options

 Royal MailDHL Express
UK 48 hr / £3.00 (free when you spend over £60) Next Day (Mon-Fri) / £5.00  
N. AMERICA   2 day, from $14
EUROPE   Next day, from €8
SCANDINAVIA   Next day, from €12
AUSTRALIA / NZ   3 day, from $25
JAPAN   3 day, from ¥2200
REST OF WORLD   3 day, from £20

60 Day Returns

Returns are really simple. We include a returns address label inside every package, so if you would like to return something to us, just make sure to send it back up to 60 days after you have received it. We recommend that you use an economic postal return service to get your order back to us. Please note that for international orders, we do not currently offer free returns.

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