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O'Neal Sierra II Circuit White/Blue Helmet - 2019

As low as $199.95
4 x $49.99
Learn more
✕

O'NEAL HELMET SIZING

ADULT HELMET SIZING
Size XS S M L XL XXL
cm 54 56 58 60 62 64

YOUTH HELMET SIZING
Size S M L XL
cm 48 50 52 54


How to measure for a helmet:

Take a cloth tape and measure the circumference of the widest part of your head, as per the diagram below:

How to measure your head for a helmet

If you need help choosing the correct size for your helmet, then tap on the yellow 'Chat With Us Now' button, and one of our team will be able to help.

✕

O'NEAL HELMET SIZING

ADULT HELMET SIZING
Size XS S M L XL XXL
cm 54 56 58 60 62 64

YOUTH HELMET SIZING
Size S M L XL
cm 48 50 52 54


How to measure for a helmet:

Take a cloth tape and measure the circumference of the widest part of your head, as per the diagram below:

How to measure your head for a helmet

If you need help choosing the correct size for your helmet, then tap on the yellow 'Chat With Us Now' button, and one of our team will be able to help.

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Details

Adventure/Enduro Helmet

Features:

  • Shell is constructed with ABS
  • Weight: 1590g (±50g)
  • Moisture-wicking, removable/washable air channelled comfort liner
  • Vent holes for optimal ventilation
  • Integrated face shield with UV protection
  • Height adjustable helmet shield
  • Padded Chin Strap with Double-D safety lock
  • Meets or exceeds ECE 22-05 helmet standard
  • Designed for Street, Enduro and Adventure Bikes
  • Integrated flip down Internal Sun Visor
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