TechGuy77
Oakley Expert
According to their site they are Polycarbonate Lenses. No mention of Tri-Acetate. I think they are relatively new from somewhere in 2015 maybe but I'm not sure. Thier PR only goes back to 2015 from what I find during my research. I guess I'll find out when they arrive.
TECHNOLOGY | LenzFlip
TECHNOLOGY | LenzFlip