HJC RPHA91 SOLID flip-up helmet: The RPHA91 is HJC's new flip-up touring helmet designed for all-day comfort. The new Premium Integrated Matrix Evo shell offers improved impact resistance and is particularly light thanks to the use of reinforcement materials such as carbine aramid, carbon fibre, glass fibre, organic fleece and linen fibre. The new HJ-37 anti-distortion visor and HJ-17 sun visor provide the driver with clear and improved peripheral vision. The chin bar locking system has been perfected and now features a hidden locking point that allows for gentle contact and less pressure on the cheek area. Noise is kept to a minimum with the 3D machined RPHA91 low noise interior designed to significantly reduce road noise. This also includes the neck padding system, which ensures that noise development is suppressed. The EPS construction is suitable for drivers with glasses. The RPHA91 is also compatible with the second generation Smart HJC Bluetooth systems.