509 Altitude 2.0 Carbon Fiber Helmet Colour:Black Ops Double Boa closure system

Double Boa closure system

Sewn elastic hem and bungee cord ensures a tight custom fit

Strategically placed open stretch mesh for ventilation

Versatile bike-to-bike conference intercom with up to seven other users

Few pumps on the market can match this level of air volume and pressure

509 Altitude 2.0 Carbon Fiber Helmet Colour:Black Ops Double Boa closure systemReinvented 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 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