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What the standards actually guarantee

Helmet safety standards dictate everything—from how much of your head the helmet covers to what kinds of labels cover the helmet’s own packaging.

But when most people think about helmet standards, they want to know just one thing: How big of a hit can this helmet take before I get hurt?

They’re interested in the impact standards.

Helmets help to protect your brain by reducing the amount of energy transferred to your brain during a crash or fall. That energy or force is generally measured in gravitational force or G’s. Experience a force greater than 300 G’s and you’re considered likely to suffer significant head trauma or death. That’s why most helmet standards today require that your helmet transmit no more than 300 G’s to your brain during an impact.

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