The Gunnar Optiks VIN-06105 Vinyl Outdoor Glasses are the only eyewear recommended by doctors to protect and enhance your vision when viewing digital screens in bright sunlit environments. Eye strain, visual stress and dry eyes can be caused by extended periods of digital screen viewing and office lighting. Stay focused and perform more efficiently throughout the day with these stylish onyx/gunmetal frame glasses designed to improve visual performance and reduce eye strain for those with 20/20 vision. The grey lenses make these glasses perfect for outdoor use. Their 57-millimeter wide lens design frames your face to protect your eyes from dry air currents, effectively preventing irritation. GUNNAR’s anti-glare lens coating is specifically engineered to filter out the harsh, high-energy part of the spectrum, reduce digital eye strain and enhance viewing detail. The Vinyl’s 135-millimeter temples and full rim frame are composed of aluminum-magnesium alloy and designed to generate proper strength and optical stability. Weighing in at only 35-grams, these lightweight glasses are properly balanced to reduce pressure points and combat eye strain. Keep your glasses in place with the 15-millimeter nose bridge and adjustable pads that articulate (3) dimensions for a dynamic fit. Micro-engineered locks securely retain the lenses without undue stress or distortion to the optics, while the hidden spring hinges flex to ergonomically fit a wide variety of head and face shapes. The Gunnar Optiks VIN-06105 Vinyl Full Rim Advanced Outdoor Glasses comes with a 1-year limited warranty against manufacturing defects. The ultimate result is improved clarity, focus and performance that meet the demanding visual needs of a new generation. Visit www.amazon.com/gunnaroptiks for more information on Gunnar Optiks and our extensive line of products.