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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.
    My bikes: 2001 Litespeed Tuscany---2015 Cannondale SuperSix EVO carbon

    If you worried about falling off the bike, you’d never get on. -- Lance Armstrong

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