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Thread: Helmet sizing

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  1. #1
    Senior Member (Retired) gmason's Avatar
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    Helmet sizing

    OK, this sounds pretty simple to me: how are cycling helmets measured?

    Given the sizes I see in ads, and taking a quick pass around my head with a tape measure, I am guessing that is what the sizes mean (for MET a large is 59-61 cm, for example).

    Does anyone know for sure? If this is the method, where is the measurement taken?

    Thanks...Gary

  2. #2
    feros ferio John E's Avatar
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    Just to add to the confusion, Gary, traditional American hat sizes use head diameter, rather than circumference.
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
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  3. #3
    Life is good RonH's Avatar
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    Performance and Nashbar generally have sizing information on their websites. And they use circumference.

    When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking. Arthur Conan Doyle

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