A sophisticated and stylish eyeshape puts Guilana at the forefront of fashionable good looks. Choose Your Lens: 555nm Polarized Ideal for bright light conditions; Driver"s Polarized: Ideal for driving,performs with cloudy and harsh light conditions; Driver"s Gradient: The choice of pilots, or anyone who requires eye protection in addition to a crystal-clear view; Drivers: Ideal for driving as the lens changes to variable light conditions