I'm sure, I was at least not picking polycarbonate glasses for reason they look, and feel too toyish, and too many of them would be scratched in transit/pop out of frames unless overmolded.

For the same reason, I did not risk buying plastic frames. They break/bend too easily.

I'm still amazed that Chinese factories managed to make optical grade glass, cut, and polished for glasses almost as cheap as molded polycarbonate.

It should be the exact opposite.

When buying fake sunglasses or unknown orgin, always buy polycarbonate plastic lenses as these filter out most UV light.

It's the fake glass lenses that are a culprit and can be very harmful to your eyes.

I have tested this with a UV light.