Iridium when first exposed has that. It is sensitive to, heck even pressure. It is not to be rubbed across and is very prone to scratches. Actually only the inside scratches ... and only that Iridium shows more than regular. It needs to be cleaned with very soft cloth under running water. Else clean with a wet cloth ... never a dry one. I lift using the pedal and rim the visor open. Its easier when riding.
The helmet itself is cheap to buy ... but I don't think it is a cheap helmet in terms of quality. And you can get a chin curtain from the MT series and fix onto this one. The Wid noise is terrible because of the always open front quarter panel vents. Above 80kmph is is very noticeable ... it kinda hurts after 100kmph.
DOT certification is not ... a certification. Its not enforced and is based on an honor system rather than certification.
The ECE R22-05 is awarded only through a mandatory testing of every batch. It tests helmets to be impact-absorbant allowing a maximum of 275g where an impact G of 200-250 results in major non-lethal head injury.
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But then what use is a certification if not enforced and I can award it to myself. That is to say I have a Phd from MIT too ... jk
i hope they have spares.

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