Combining an in-demand lens shape with a contemporary crystal frame and an adjustable nose bridge, Rokka matches a personalised fit with uncompromised style. Lens Features: Clear lenses provide true colour recognition and are ideal for general purpose indoor and outdoor work in normal to low light conditions. Grey lenses reduce brightness to minimise eye fatigue in moderate to bright environments, making them ideal for daytime wear and outdoor tasks. The dark-tinted lenses decrease glare without distorting colours.