The HJC RPHA 10 (formerly the RPS-10) is a high-performance/street helmet designed with input from MotoGP star Ben Spies. Its Premium Integrated Matrix (PIM) construction combines carbon fiber, aramid fiber, fiberglass and organic, non-woven fabric for a strong, light blend. The helmet is fine-tuned for high-speed aerodynamic performance and minimum vibration. The center-locking shield system produces a secure shield, while an ultra-plush, breathable interior makes for a comfortable ride. In addition, its Advanced Channeling Ventilation System offers full front-to-back airflow to flush out heat and humidity.