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Castelli Nanoflex Cycling Leg Warmers - Black


Out of Stock
View Size Guide
Castelli Men's Clothing Size Guide
  S M L XL 2XL 3XL
Chest (cm) 92 96 100 105 110 115
Waist (cm) 80 84 88 93 98 103
Hips (cm) 94 98 102 107 112 117
Inseam (cm) 82 83 84 85 86 87


Castelli Shoe Cover Size Guide
  S M L XL 2XL
Men's/Women's EU Size 39-40 41-42 43-44 45-46 47-48


Castelli Men's Socks Size Guide
  S/M L/XL 2XL
Men's Shoe Size (EU) 35-39 40-43 44/47


Castelli Gloves Size Guide
Men/Women <17cm 17-20cm 20-23cm 23-25cm 25-27cm >27cm



Castelli's Nanoflex leg warmers are a testament to the brand's position as an innovative market-leader. Crafted from intelligent Nanoflex fabric, these cycling leg warmers bear all the cooling properties of a Thermoflex fabric in dry conditions to ensure you remain fresh and ventilated, yet when it begins to rain the NanoFlex fabric then transforms to show its excellent hydrophobic qualities and repels water to keep you cool and dry. Double-sided silicone grippers keep these cycling essentials in place throughout your journey and the leg warmers are finished with ankle zips and the signature Castelli branding to the lower leg. - L.R.


  • Castelli Nanoflex black leg warmers
  • Made from water-resistant Nanoflex fabric
  • Same breathability, stretch and warmth as Thermoflex warmers
  • Double-sided silicone grippers keep the warmers in place
  • Ankle zips for added ventilation
  • Great in every possible condition
  • Weight: 134g (Size L, manufacturer claimed)

Product Details

  • Nanoflex
  • Nanoflex
  • Castelli
  • Black

Delivery & Returns

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: Sold out

Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

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Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.




(9 Reviews)

  • 5    4
  • 4    3
  • 3    1
  • 2    0
  • 1    1
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A Hard Rain's A-Gonna Fall

Total :


I purchased the Nanoflex leg warmers to go with the Bib shorts. A great match for my Nanoflex bib shorts and perfect for light rain and slightly warmer conditions when you don't want to wear bib tights on top of bib shorts. Thinking they will work well for early season racing under the Castelli skinsuit.

Tue Feb 09 15:40:21 GMT 2016 by

Top Banana

Total :


Really good product, I would recommend it. I bought them to make my commute more comfortable in the morning and soon discovered the top thigh section of the warmers slip down to your knee when riding IF you do not wear bib shorts over the top. But as soon as you wear some cycling shorts over the top they stay firmly in place no matter how long the ride and I can confirm they are certainly very warm and windproof. Although I can't confirm the level of water resistance as I haven't riden in them through bad weather. But I did give them a cheeky test drive in the shower and the water appears to bead and roll right away! To summarise: Top banana

Mon Jan 25 10:13:03 GMT 2016 by

Great fit

Total :


Lightning fast delivery as usual from PBK. Great product - not tried in wet yet, but size and fit is excellent. I'm 180cm and 82kg and L is perfect. No nasty gaps between leg warmer and either shorts or socks. Zips at ankles are nice design

Tue Jun 09 21:25:04 BST 2015 by

Slow delivery

Total :


I ordered for a month and still haven't got my item. FYI, I am from Hong Kong.

Mon Mar 02 14:08:51 GMT 2015 by

Quality piece of kit

Total :


Been meaning to get a pair of these after reading all the positive reviews. Best price was at PBK so snapped them up. They aren't deep winter warmers so bear that in mind but they kept me snug enough on most rides. Haven't really been out in the rain yet so can't confirm what so many reviews already have in terms of water resistance. Overall they look and feel like a quality piece of kit and if you are like me and feel the slightest uneven seam then remember to cut the tag on the inside thigh area of the right warmer.

Wed Jan 28 20:53:30 GMT 2015 by

Water-resistant but not warm

Total :


They do the job well - are very water resistant. This is good at stopping spray from the road on your legs.

However, not very wind resistant at all - or warm - so better for the autumn rather than true winter.

As for sizing - 183cm and 70KG and a medium fits well - if a bit long.

Fri Nov 09 00:00:00 GMT 2012 by

water resistant... not very warm

Total :


These leg warmers are very water resistant. They are not very warm, but they do work on cool mornings/rainy days. They compress the legs nicely which helps the leg muscles stay warm and prevents cramping. Overall, solid product.

Wed Sep 12 00:00:00 BST 2012 by

Fit for purpose

Total :


Great product. Water resistant!

Great Value (PBK gives a solid competitive price)
Warm & Comfortable (Fleece on in-side keep you warm)
High Quality (Castelli = leading brand)
Lightweight (No unnecessary layers)
Good Fit: However, A bit long (only long) in the size , but just

Fri Jun 03 00:00:00 BST 2011 by

A bit colder than regular leg warmers

Total :


I found them a bit colder then the Castelli Thermoflex warmers, but the the waterproofness is great. They are also a bit long in size M. But all in all an ok purchase.

Wed Apr 13 00:00:00 BST 2011 by

Castelli Nanoflex Cycling Leg Warmers - Black

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Castelli Nanoflex Cycling Leg Warmers - Black