HJC Rpha 91 Combust Helmet The HJC Rpha 91 Helmet combines form and function, offering riders not only a sleek design but also enhancing their experience with practical features. Using the Advanced P.i.m. Evo shell technology integrated with carbon fiber, this helmet provides superior shock resistance while maintaining a light weight, ensuring durability and comfort on any journey. Features: Premium Integrated Matrix / P.i.m. EVO (Reinforcement materials including Carbon-Aramid Hybrid and Natural Fiber provide enhanced Shock-Resistant performance) Aerodynamic design shell reduces air resistance and provides stability at high speed Full front-to-back airflow, 5 intakes and 7 exhausts Pinlock Ready Hj-37 face shield Quick, Simple and Secure Visor Ratchet System Adjustable 3-step sunshield (Hj-V12) for optimized position Dark Smoke Sunshield Installed Interior with advanced anti-bacterial fabric provides enhanced moisture wicking and quick dry function Removable/washable crown and cheek pads Ready for 21B & 50B Bluetooth (sold separately) DOT approved