Black Onyx Gradient lenses start as dark as the solid black/grey lens at the top, but get gradually lighter towards the bottom of the lens. Commonly found in luxury fashion sunglasses they have polarisation for exceptional glare protection and are an excellent lens for medium to bright conditions. The smoke tint shows true colours and is a must where colour recognition is important.
They also have a discrete anti-reflective coating on the inside and an extra hard coating on the outside to assist with scratch prevention. A perfect combination of style and practicality.