Are the lenses glass or a poly-carbonate...
Are the lenses glass or a poly-carbonate ?
Thanks for the question. I checked with Julbo and found that both of the options offered on this page for the Julbo Micropore Sunglasses - Alti Arc 4+ Lens are a Mineral Glass lens. There is an option that has the Spectron 3 lens as well which is a poly-carbonate lens that is available on the site.