It’s important that a helmet should fit the cyclist properly - according to research most (well over 90%) helmets have been found to be incorrectly fitted.
A BMX helmet is a lightweight to full weight motorcycle-style helmet. They always have a chinbar for facial protection, and some of them have a big, square visor bolted to the helmet. They’re usually made out of a hard material like metal, plastic, glass fiber, resin fiber or similar, depending on the use they’re intended for.
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