Polyester Made in USA or Imported Hand lay-up carbon fiber composite construction Upper vents with on/off shutter closure for airflow control Fidlock chinstrap strap closure for easy in and out Pro-Series Breathbox for complete protection, removable for optimal air flow DOT approved. Meets the FMVSS 218 Standard Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. Leading the charge is the 509 Altitude 2.0 Carbon Fiber Snowmobile Helmet with a new hand lay-up carbon composite construction that’s lighter, stronger, and straight-up sleeker than anything before it. For those who like to get aggressive, it includes the Fidlock magnetic strap buckle for easy one-handed operation, a built-in universal camera mount, plus airflow control venting.DOT approved. Meets the FMVSS 218 Standard