The HJC C70 Troky Helmet is a full-face street and touring helmet designed to combine lightweight protection, clear visibility, effective ventilation, and everyday riding comfort. Its Advanced Polycarbonate Composite shell uses CAD-developed shaping for a secure fit, while HJC's Advanced Channeling Ventilation System helps move heat and humidity through the helmet.

• Advanced Polycarbonate Composite shell provides lightweight protection and comfort
• CAD-developed shell design helps provide a secure and comfortable fit
• DOT approved for street motorcycle use
• Advanced Channeling Ventilation System promotes front-to-back airflow
• Multiple intake and exhaust vents help remove heat and humidity
• HJ-20M Pinlock®-ready clear face shield
• Face shield provides UV protection
• RapidFire™ shield replacement system allows quick, tool-free removal and installation
• Integrated internal sun shield
• SuperCool™ moisture-wicking interior
• Removable and washable interior liner
• Eyeglass-friendly interior design
• Micrometric chin-strap buckle
• Designed for street, commuting, and touring motorcycle riding

HJC C70 Adult Helmet Size Chart

How to Measure: Wrap a soft measuring tape around the widest part of the head, approximately one inch above the eyebrows and around the largest portion at the back of the head. Keep the tape level and comfortably snug.

Fit Note: A motorcycle helmet should fit securely and evenly around the head without painful pressure points. It should not shift excessively when the rider turns or shakes their head.

The interactive size finder uses head circumference in inches. For helmets, proper secure fit should take priority over a looser fit preference.