Castelli Nanoflex Plus kneewarmers review

Castelli has updated its Nanoflex kneewarmers this year. We test whether the new Plus version is as good as the original

(Image credit: chris catchpole)
Cycling Weekly Verdict

Preserve the excellent warmth, water repellence and fit of their predecessors while removing the uncomfortable rear seam. But they are pricy.

Reasons to buy
  • +

    Extra warmth for in-between days

  • +

    Persistent water resistant coating

  • +

    No seams behind the knee joint in the new Plus version

  • +

Reasons to avoid
  • -

    Not cheap for a short tube of fabric

  • -

    Almost as long as a legwarmer

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

Castelli’s Nanoflex kneewarmers are a staple of my mid-season wardrobe and good for milder winter rides too. I’ve had a pair for over four years and they’re still going strong. Kneewarmers extend the life of your summer shorts for a month or so in the spring and the autumn. Pair them with fleecy shorts and you’ll get another few weeks’ use from them into even colder conditions. And they’re useful even in the summer if you are making cool starts.

>>> Dos and don'ts of winter training (video)

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Paul Norman

Paul started writing for Cycling Weekly in 2015, covering cycling tech, new bikes and product testing. Since then, he’s reviewed hundreds of bikes and thousands of other pieces of cycling equipment for the magazine and the Cycling Weekly website.

He’s been cycling for a lot longer than that though and his travels by bike have taken him all around Europe and to California. He’s been riding gravel since before gravel bikes existed too, riding a cyclocross bike through the Chilterns and along the South Downs.