HJC F31 Helmet The HJC F31 helmet offers the perfect combination of advanced protection and comfort for tourers and commuters alike. Its shell is crafted from an Advanced Fiberglass Composite, leveraging CAD technology for impeccable aerodynamics. A Pinlock-ready Hj-43 face shield and an integrated Hj-V12 dark smoke sun shield give you a clear view of the road ahead. For optimal airflow and cooling, the F31 features an ACS Advanced Channeling Ventilation System with strategically placed vents. The interior boasts quick-dry, moisture-wicking fabrics and removable, washable cheek pads for a customizable fit. Additionally, the helmet is designed for effortless integration with the Smart HJC 50B, 21B or 11B Bluetooth communication systems, enhancing connectivity on the go. Shell: 3 Shell sizes: Xs-Sm, Md-Lg, Xl-2Xl Advanced Fiberglass Composite shell Designed using CAD technology for lightweight, superior comfort and fit Ventilation: Advanced Channeling Ventilation System (Acs) - Full front-to-back airflow flushes heat and humidity out of the helmet Three intakes and one exhaust port Shield: Clear Pinlock-Ready Hj-43 face shield included (lens sold separately) Provides 99 UV protection Anti-Scratch coated Two-way pivot ratchet for smooth movement and improved sealing Hj-V12 dark smoke inner sun shield included Interior: Moisture-wicking, quick-drying performance interior Crown and cheek pads are removable & washable Interchangeable cheek pads between all sizes Bluetooth Compatibility: Smart HJC ready, designed to seamlessly integrate with the 50B, 21B and 11B Bluetooth communication systems (sold separately) Safety: Double D-ring closure DOT approved