Johnny Fly has always been known for our high quality, polarized lenses. But, we are taking it a step further. As of now, Johnny Fly frames will now feature the latest in sunglass lens technology: Enter Nylon… Nylon lenses are light, flexible, resistant, BPA Free, and guarantee 70% better optical quality than what you see from most lenses on the market. Not only that, but nylon lenses sensibly reduces the impact of production compared to other lenses which in return, reduces our carbon footprint.