Kask Protone Helmet review

The Protone is a vented aero helmet, but how does it perform? We tested it to find out

Cycling Weekly Verdict

It's expensive, but it is comfortable and impressively light. The ventilation may not be on par with a fully vented option, but this a very good helmet and a great hybrid for those looking for a semi-aero option.

Reasons to buy
  • +


  • +


  • +

    Nice strap

Reasons to avoid
  • -


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 sweater. There’s no doubt about that. Even in winter with the slightest bit of effort, it can feel like I’ve just been caught in a shower. As a result I’ve never really got along with fully closed off aero helmets so having some decent ventilation is an absolute must.

I was intrigued to give the Kask Protone a go, particularly as it aims to bridge the gap between fully aerodynamic and fully ventilated helmets.

Thank you for reading 20 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

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).