509 Altitude 2.0 Hi-Flow Helmet - F01009700

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. FEATURES: -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 -Weight: DOT/ECE 1200 grams