Spy Helm SunglassesKen Block's swagger and adventurous driving style helped shape the Helm. Ken asked for a vintage sunglass with aggressive lines and under his direction, SPY delivered.-Designed with Ken Block-Built from bomb-proof Grilamid-6-Base PC lenses-100% UV protection-Contrast logo detailing-Frame measures: 57-18-140SPY HAPPY LENSThe Spy Happy Lens technology lets in the good long-wave blue light that promotes balance in the body\xEAs circadian rhythm, blocks harmful bad rays, and combines crisp, color contrast enhancing lenses and a Trident Polarization for the ultimate viewing experience.