The RPHA 31 is HJC&';s premium open-face helmet, designed to deliver refined comfort, lightweight performance, and enhanced protection. Its advanced PIM Evo shell and multi-density EPS provide elevated shock resistance, while aerodynamic optimization and wind tunnel testing contribute to a quieter, more stable ride. The integrated sun visor helps reduce noise and wind turbulence, and compatibility with the 2nd generation SMART HJC Bluetooth system adds seamless connectivity to every ride. Premium integrated matrix / P.I.M EVO: Reinforcement materials including Carbon-Aramid Hybrid and Natural Fiber, provide enhanced Shock-Resistantperformance, more comfort, and lightness of the helmet. Aerodynamic design shell reduces air resistance & provides stability at high speed. Full front-to-back airflow: 2 intakes and 4 Exhausts. Pinlock Ready HJ-39 Shield: Provides 99% UV protection, Anti-Scratch coated. Quick, Simple and Secure Shield Ratchet System. Shield deflector decreases noise level and wind turbulence. Shield holder reduces noise & drag forces and holds visor tight. Adjustable 3-step sun visor for optimized position. Dark Smoke Sun Visor installed. Interior with advanced anti-bacteria fabric provides enhanced moisture wicking and quick drying function. Crown and Cheek pads: Removable and washable. Ready for SMART HJC 21B & 50B Bluetooth (sold separately).