Castelli Nano Flex Pro Omloop thermal bib shorts review

The extra-long Castelli thermal shorts put to the test

Castelli Nano Flex Pro Omloop thermal bib shorts
Cycling Weekly Verdict

The Castelli Nano Flex Pro Omloop thermal shorts are clearly a very high-quality piece of kit and one that will deliver almost everything it offers. The fit around the knee could be an issue for some, and could require a lot of trial and error to get the right fit.

Reasons to buy
  • +

    Warm

  • +

    Lightweight and breathable

  • +

    Great rain protection

  • +

    Really comfortable

Reasons to avoid
  • -

    Length towards the knee could be difficult to get right

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.

I'm a big fan of thermal bib shorts. Paired with a decent pair of leg warmers, there's nothing more snug on winter or early spring rides and I very often opt for them over a pair of regular bib tights. So let's see how the Castelli Nano Flex Pro Omloop thermal bib shorts fare.

The Castelli Nano Flex Pro Omloop thermal bib shorts presented a slightly alternative take on thermal shorts that I've not encountered before.

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Richard Windsor

Follow on Twitter: @richwindy


Richard is digital editor of Cycling Weekly. Joining the team in 2013, Richard became editor of the website in 2014 and coordinates site content and strategy, leading the news team in coverage of the world's biggest races and working with the tech editor to deliver comprehensive buying guides, reviews, and the latest product news.


An occasional racer, Richard spends most of his time preparing for long-distance touring rides these days, or getting out to the Surrey Hills on the weekend on his Specialized Tarmac SL6 (with an obligatory pub stop of course).