509 Altitude 2.0 Carbon Fiber Helmet Size:4XL Glide with ease & low

Glide with ease & low profile design offers flexibility

An elastic waistband keeps it in place while a near-360 zipper allows you to efficiently drop trou when nature calls

Active-fit sleeves for increased breathability and airflow

YKK® AquaGuard® RallyFlap chest zip converts the front zipper to an oversized intake vent

509 Altitude 2.0 Carbon Fiber Helmet Size:4XL Glide with ease & lowReinvented 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