Prizm technology excels in bright conditions and improves the colour and contrast of your vision to help you see in more detail. A durable O-Matter frame ensures durability while the Unobtainium non-slip nosepads secure the fit even in wet conditions.Prizm Lens - enhanced colour and contrast for full-detailed visionClassic design provides a versatile look for everyoneFrame: Aluminium brow with durable and comfortable O-Matter lower halfNon-slip Unobtainium nosepads perform even when wetFrame colour: Matt Black/GreyLens colour: GreyLight transmission: 17%Light conditions: Bright light