i80 Adventure Modular Helmet. Shell: Advanced Polycarbonate Compound: By blending high-grade polycarbonate with high-impact strength and ABS in an optimal ratio, HJC has developed a shell that is both strong and impact-resistant while maintaining a lightweight design. Wind tunnel-tested. Ventilation: "ACS" Advanced Channeling Ventilation System: Full front-to-back airflow flushes heat and humidity out of the helmet. Peak: Optimized peak visor has been wind tunnel tested and fine-tuned using advanced CFD (Computational Fluid Dynamics) programs. It provides maximum stability and reduced drag, even at high speeds. Visor (Shield): Pinlock Ready HJ-44 Visor: Provides 99% UV protection, anti-scratch coated.