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Castelli Nanoflex Cycling Leg Warmers - Black


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Average connection time 25 secs

Average connection time 25 secs

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)
Clothing Feature:
Water Resistant
11°C to 15°C
Cycling Clothing Fit:
Regular Fit

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

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Customer Reviews

Overall Rating : 4.2 / 5 (15 Reviews)
  • 8 5 star reviews
  • 4 4 star reviews
  • 2 3 star reviews
  • 0 2 star reviews
  • 1 1 star reviews
See all reviews

Top 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.

Castelli's Nanoflex leg warmers

great for spring morning ride and light shower weather, keep u warm dry. i am happy with these legs warmers

A Hard Rain's A-Gonna Fall

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.

Top Banana

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

Great for cooler mornings

These are a great addition to my modern lifestyle. I'm 178cm and 78Kg the medium fits very well. They are plenty warm enough, without feeling too bulky. You can feel some material behind the knee, but that's because there's material behind you knee keeping you warm! It's nice to ride them to training before work, then not need them for the way home in the evening. They fit in a jersey pocket.

Great fit

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

Slow delivery

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

Quality piece of kit

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.

Effective but weird fit

Water resistance works great and it water just beads off. Fit is a little weird. I'm 5'7", 165lbs and the length is fine, but the silicone gripper tends to slip down a little bit.

Excellent product

Bought these to match the arm warmers. Excellent product. Snug fit with Medium. (I'm 5"10, 156lbs.) Order/shipment process well executed.

Water-resistant but not warm

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.

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