Lens Lamination: Anti-fog treatment is fused directly to the outer lens to reduce distortion and enhance clarity in all conditions. PRIZM Lens Technology: Every Flow Scape lens features Prizm Snow optics, built to fine-tune contrast and help reveal more detail in snow, sun, and shade. Switchlock Technology: For a quick lens change, Flight Deck Pro features two outrigger mechanical locks that give you the confidence of lens security.