Kask Protone Icon Helmet Size:SM provides widest resistance range and

provides widest resistance range and road-like feel

triathlon and aero road bikes are designed so that the rider and bike (as an integrated system) present the smallest frontal area possible

resulting in longer life and lower drag

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Plan on getting rowdy on your ride

Kask Protone Icon Helmet Size:SM provides widest resistance range andThe new synonym for victory, the Protone Icon helmet features the latest technological advances in safety, ventilation, and aerodynamics to make it an icon of road cycling. The Protone Icon takes its design from KASKs winning Protone helmet and has improved upon it in every way possible.