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KaskProtone Helmet

KaskProtone Helmet

Select a color:Grey Matte

Select a size:

Size Chart


4.5 out of 5 stars
73 Reviews

Not just any lid will suffice.

The Kask Protone uses In-Mold Construction. This means that the polycarbonate shell is bonded to an EPS foam body. This is then secured over a frame, which allows the shell to absorb impact while keeping the structural integrity of the helmet. The Protone is secured with Kask’s Octo Fit Cradle that adjusts to personalize the fit. The ECO chinstrap has anti-odor properties.

Not merely a shell to keep your head intact, the Protone is also an essential aerodynamic accessory. The helmet’s interior padding is sewn from Coolmax, which helps to pull moisture from your head to keep you cool. To further assist with cooling, Kask placed the Protone in a wind tunnel and added large front vents and rear ports. The open design allows optimal airflow and doesn’t sacrifice aerodynamics.


  • Top your head with the helmet that tops Tour podiums
  • In-Mold shell increases structural integrity
  • Aerodynamically verified in ye olde wind tunnel
  • Adjustable cradle keeps your tactical muscle secure
  • Ventilation channels to encourage air flow and keep you dry
  • Anti-odor padding will fend off stink for way longer than 21 days
  • Item #KSK000I

Tech Specs

Shell Material
Impact Foam
EPS foam
18 vents
Fit Adjustment
Octo Fit
CE EN 1078, CPSC 1203, AS/NZS 2063
Claimed Weight
[medium] 8.1oz (230g), [large] 8.8oz (250g)
Manufacturer Warranty
limited lifetime

Overall Rating

4 based on 73 ratings

Review Summary

5 Stars - 49 reviews
4 Stars - 14 reviews
3 Stars - 5 reviews
2 Stars - 2 reviews
1 Stars - 3 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

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