509 Altitude 2.0 Carbon Fiber 3K Hi-Flow Snow Helmet Size:XL easy pairing and robust performance

easy pairing and robust performance Rider-to-rider range: up to 1

it puts comfort on blast with three-stage ventilation in a lightweight and stretchy tech jersey fabric

Legend goes on to say that by attaching a small bell onto your bike

Material: High-quality

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509 Altitude 2.0 Carbon Fiber 3K Hi-Flow Snow Helmet Size:XL easy pairing and robust performanceEngineered with 40% larger chinbar intake and rear exhaust vents. All open vents, removed shutter for increased flow, plugs removed, more breathable for mountain riders. Combined with an ultralight ECE 3K Carbon layup this helmet is optimized for the most demanding off trail riders. FEATURES Hand lay up carbon fiber composite construction XS to 4X sizes available in three shells for optimal fit and minimal weight Upper vents for optimal airflow Go Pro