reflective visors for bio?

[Nismo300ZX]

I was wondering, for those of you who have seen the reflective lenses for the bios, like the one seen on SDCC 09, where can I find these types of lenses that are big enough? Any help or info would be appreciated.

 

[ptgreek]

Motorcycle helmet visors. they come in all kind of colors and tints ..they are fairly easy to cut as well