PeakVision is known for its patented Dual Zone Lens Technology. The PeakVision lenses were designed by J-Paul Moore to eliminate distortion within sports optics. It took him over four years to prototype and design the PeakVision dual-zone lens, which he dubbed to be the perfect lens for golf, tennis, biking, and many other sports. No Distortion. No worries The DG1 golf eyewear sunglasses are equipped with PEAKVISION's proprietary Zero Distortion optics featuring Dual-Zone lens technology to make your vision sharp and clear in lighting extremes- the bright sky against the darker turf and terrain below the horizon. Upper 20% Neutral Gray- enhances long-distance visibility, reduces glare from the sun, and lessens fatigue and strain on the eye. Lower 60% Contrast Amber- enhances clarity and provides 3X visual information as your naked eye allowing a great view of greens and course. Other Features of LX2 · Anti-Reflective Backside Coating and Oleophobic Smudge-Resistant Coating help in the repulsion of dirt, oil, and water making sunglasses easy to clean. · Super-Hydrophobic Liquid Repellent Coating · RA filters combat against glare from all angles and help in enhancing your vision · Fabricated from lightweight and durable Grilamid TR90 that provides fatigue-strength with extra comfort · 100% UV400 Protection · Impact-Resistant Safety DG1 comes in three solid colored frames- Black, Brown, and White. EVA case included. 90 DAY MANUFACTURER's DEFECT WARRANTY: Customers can return and get a refund or a new pair if the product has a defect from the factory. Click Order Now!