HJC i31 Tevis Helmet The HJC i31 Helmet is designed for the discerning rider, balancing safety, comfort and convenience in an advanced package. Its polycarbonate composite shell is both lightweight and durable, with an aerodynamic shield for added stability at higher speeds. Visibility is a top priority, with a Pinlock-ready Hj-43 face shield and a built-in Hj-V12 sun shield to adapt to various lighting conditions. The ACS ventilation system ensures efficient airflow with one intake and two exhaust vents. Comfort is enhanced by the MultiCool interior, which is quick-drying and moisture-wicking, and includes grooves for those who wear eyeglasses. The i31 helmet also features the Rapidfire system for easy shield replacement and a nylon strap retention system for security. With DOT certification, the i31 is a reliable choice for any ride. Features: Advanced polycarbonate composite shell Pinlock Ready Hj-43 face shield ACS Advanced Channeling Ventilation System 1 intake and 2 exhaust vents Hj-V12 integrated dark smoke sun shield MultiCool moisture wicking and quick dry interior Aerodynamic 3D shield design Rapidfire shield replacement system Nylon strap retention system Grooves for eyeglass wearers DOT certified