One look at the Assos Zegho Noir Sunglasses, and its clear that something special is going on. What that is may not quite be apparent at first glance, so we'll dive right in. The Zegho Noir uses Zeiss lenses, first and foremost. These lenses are completely distortion free, which puts them in pretty rarefied company. These Zeiss lenses obviously cover the eyes completely, but they're also rimless, which affords 180 degrees of vision a number unmatched by even some of our longtime favorite eyewear. Additionally, the dark to clear transition is what Assos calls Tunnel Vision it's designed to allow you to tilt your head up slightly when you enter the tunnel and maintain full vision, then return to normal at the exit. It's such a simple solution that simply works. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer andor birth defects or other reproductive harm.