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Code: CS16577010
Castelli NanoFlex+ Armwarmers - SS18


The Castelli NanoFlex armwarmers have been part of their collection for 7 years now and during that time have become recognised by those in the know as the very best in protection from the elements. This latest version sees a new additional fabric – Nano Light added to the back of the elbow to help with ease of movement and enhance the fit and comfort while keeping water protection as high as ever. 



  • Fleece lined to keep arms warm
  • Highly breathable
  • Fast drying
  • Improved UV protection
  • Great in any cool, wet condition
  • Repels water droplets from rain and road spray
Excellent product for the cold and rainy days
Really happy with these - using them for winter riding with a Gabba and they work beautifully. I do start out a little cold - as a winter set up this is for hard riding rather than a leisurely cruise - although I'm sure they'd be good for that for 3 seasons. Excellent delivery etc from Merlin - and cheap too
Among the best arm warmers out there, brilliant wind proofing and surprisingly good at repelling water
Simple, warm and highly effective.
Nano flex is not entirely waterproof but in combination with the slight brushed interior means these are ideal in all but winter down-pours. I have a pair of leg warmers in the same material and they span the gap between longs and shorts in terms of weather conditions.
Runs really small. I'm 5'7" 130lbs and M is pretty tight, I'd probably go with L if I knew they run that small, but I don't want to deal with the hassle of returning them.
Purchased the size large that has a very comfortable fit. Perfect on a cool windy day with moisture in the air.
These are much better than the previous version and worth the extra cost. They're far more comfortable around the elbow and the logos are more subtle. Highly recommend these.