*ONEAL SIERRA II Flat Adult Adventure Helmet

*ONEAL SIERRA II Flat Adult Adventure Helmet

Marsoni

M251S

$199.00

Get it in 3 business days with 1 day shipping. Friday, May 29

*ONEAL SIERRA II Flat Adult Adventure HelmetSIZING CHART 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: Shell is constructed with ABS Weight: 1590g (50g) Moisture wicking, removable washable air channeled comfort liner Vent holes for optimal ventilation Integrated face shield

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Your *ONEAL SIERRA II Flat Adult Adventure Helmet orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Very nice looking suit and my son loves it! We really like this suit, but unfortunately, the adjustable elastic waist band was sewn into the top of a belt loop on one side, so I will need to seam rip out those stitches and re-sew the belt loop. Also there are stitches through the adjustable back of the vest on one side that I will also need to taken out. Not deal breakers and I definitely know how to do this myself, so it doesn't seem worth returning over. If you order this, just be sure the stitching is right. Hopefully it is just an issue on the one we got. Our son is about 47" tall and weighs 46 pounds and the size 7 suit fits really well, especially because of the adjustable waist.

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Reviewed in the United States on September 27, 2025

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Eliud

Houston, US

★★★★★ 5

Looks Fantastic!

Size: 8, Color: Brown, Size: 8, Color: Brown

Fit just right on my boy

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Reviewed in the United States on April 29, 2026

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Deanne

Boise, US

★★★★★ 5

Recommended 100

Size: 16, Color: Navy Blue-vest Set, Size: 16, Color: Navy Blue-vest Set

My little man looked amazing for my wedding. Love my handsome guys. I do have to say I'm a lucky lady. Highly recommend this. Material everything was top notch and the price just makes it even better.

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Reviewed in the United States on April 3, 2026

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Amazon Customer

Louisville, US

★★★★★ 4

Good for the price

Size: 7, Color: Navy Blue-vest Set

Purchased for a wedding. My 6 year old was the ring bearer. Perfect fit and he felt like million bucks in it. The color was as advertised and it’s well made. Great value. The under shirt did shrink after washing

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Reviewed in the United States on December 15, 2025

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TIFFANY

Waukegan, US

★★★★★ 5

Perfection

Amazing quality and great value for the price

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Reviewed in the United States on April 22, 2026