O'NEAL Sierra II Flat Helmet
Whether 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:
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Shell is constructed with ABS
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Weight: 1590g (±50g)
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Moisture-wicking, removable/washable air channeled comfort liner
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Vent holes for optimal ventilation
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Integrated face shield
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Height adjustable helmet shield
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Padded Chin Strap with Double-D safety lock
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Meets DOT safety standard
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Designed for Street, Enduro and Adventure Bikes
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Replacement parts available
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Side goggle traction pad keeps goggle strap securely in place
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High air intake mouth vent with screen lets air in while keeping debris out
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Replacement liners, cheek pads and visors available
| CM | INCHES | CHEEK PAD SIZE | WEIGHT | |
| XS | 53-54 | 20 7/8 - 21 1/4 | 55mm | 3.19lbs - 3.3lbs |
| S | 55-56 | 21 5/8 - 22 | 50mm | 3.19lbs - 3.3lbs |
| M | 57-58 | 22 1/2 - 22 7/8 | 40mm | 3.19lbs - 3.3lbs |
| L | 59-60 | 23 1/4 - 23 5/8 | 45mm | 3.19lbs - 3.3lbs |
| XL | 61-62 | 24-24 3/8 | 35mm | 3.19lbs - 3.3lbs |
| XXL | 63-64 | 24 3/4 - 25 1/8 | 30mm | 3.19lbs - 3.3lbs |