Blank offer the highest level of lightweight protection and comfort with an optimized lens shape to halt damaging rays before they reach your retina. Wrapping close to your head, Blank is made for speed. Built for extended active use, be it running, biking or climbing the Zeiss grey base lens is ideal for prolonged use during bright and sunny days. This lens offer visual protection from high reflections, delivers the greatest visual comfort and natural perception without any colour distortion. The Zeiss brown base contrast lens is ideal for sunny to cloudy days and offer the best visual contrast, brilliance of colours and image definition in a mountain environment.