Atomic Four Pro HD deliver unprecedented visibility for any all-mountain adventure, whether you’re tackling a switch landing in the shade, a pillow field on a powder day, a narrow couloir in low clouds or a flat-light groomer. With HD Lens Technology, micro-crystals in the lens divide light into its 6 spectral colors, enhancing the blue and red layers for incredible depth perception and visibility in all light conditions. The Cylindrical Double Lens combined with a Large Fit offers a huge field of vision, while a Sealed Lens System shuts out wind and water to eliminate condensation and fogging and makes swapping the lens easy. A Live Fit Frame molds to your face for an individual, custom fit and OTG Lite grooves in the frame generously accommodate prescription glasses.