509 Altitude 2.0 Hi-Flow Snowmobile Helmet

Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. For those who run at redline, the new 509 Altitude 2.0 Hi-Flow Helmet maximizes airflow with open upper and rear vents plus a 40% larger chinbar intake. Everything else is what you’d expect from one of the world’s bestsellers, including a new hand lay-up fiberglass construction that makes this helmet lighter, stronger, and even more comfortable.es. Hand lay-up fiberglass composite construction XS to 4X sizes available in three shells for optimal fit and minimal weight Upper vents for optimal airflow Go-Pro® mounting capability, improved design Fidlock® chinstrap strap closure for easy in and out Perfect fit between helmet eyeport and 509 goggles Pro-Series Breathbox for complete protection, removable for optimal air flow DOT/ECE