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Top-quality YKK Japan Zippers
Reduces the quenching effect to ensure a larger
Accurately machined teeth reduce vibration and mechanical noise during operation
This replacement unit allows you to regain control over the internal airflow
Specially designed carcass provides a large contact patch for improved cornering
O'Neal SIERRA Helmet - Flat Black S3-Colour-CM-AS5 Top-quality YKK Japan ZippersWhether you ride on the pavement or the dirt or both the Sierra II has the features you need for your next two wheel adventure. Combining a full windscreen and a visor with a drop down tinted shield, the Sierra II helmet will get you anywhere you want to go. Features: Shell is constructed with ABS Weight: 1590g (50g) Moisture wicking, removable washable air channeled comfort liner Vent holes for optimal ventilation Integrated face shield with UV
