Developed and engineered in the wind tunnel with the collaboration of Swiss Side world-class aerodynamic experts, our Nytron road aero cycling helmet blends ultimate safety, amazing aerodynamic performance with compact and light design. Thanks to the scientific combination of massive exhaust vents and internal directional power flow channels, the Nytron cycling helmet's awesome ventilation keeps the riders head cool lowering body temperature thus enhancing overall performance. Nytron cycling helmet exceeds the Rudy Project WG11 experimental protocol test. The WG11 rotational impact test is a protocol adopted by Rudy Project, in cooperation with accredited and notified bodies, to test and measure the performance of the helmets against rotational impacts.