Has your chinstrap gotten kind of grungy or shows sign of wear? It's ok, we won't hold it against you! Maybe it's time for a replacement.
Installs in just a couple of minutes with a Phillips head screwdriver.
Note: The chinstrap on the Iron Neck is not intended to be very tight. It is more intended to be a safety precaution and worn loosely just beneath the chin.
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Iron Neck Pro offers full range isometric and con...