You want more venting? 509's got it. The 509 Sinister X6 Fuzion Flow Goggle maximizes airflow to maintain total fog-free clarity for the most aggressive riders. Venting in both the lens and the frame optimizes airflow to eliminate fogging, while industry-first Fuzion lens technology fuses Super Anti-Fog inner and outer lenses into one optically clear view. Available HCS (High Contrast Spectrum) lens tints (sold separately) let you fine-tune your vision to fit any lighting condition.
• FLOW venting in lens, and in frame
• Fuzion Lens Technology
• HCS (High Contrast Spectrum) technology lens options
• 45mm strap with silicone to hold strap in place
• Removable nose piece
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