About DefenderShield Created by a former telecommunications engineer and executive, DefenderShield has been recognized as the trusted worldwide advisor in digital wellness information and solutions. Over the past decade, our mission has been to support consumers in living healthy lives by providing products and information that can help you upgrade your digital wellness in a world surrounded by technology. DefenderShield Highlights Led & Steered by World Class Engineers, Scientists and Medical Doctors Advanced Blue Light Blocking Technology DefenderShield Universal Fitover Blue Light Blocking Glasses are the ultimate solution for blocking blue light emitted from digital screens of computers, laptops, tablets, cell phones and other electronic devices while also wearing your prescription or reading glasses. High energy blue light coming from digital screens may result in eye strain, headaches, fatigue, dry eyes, and problems focusing. We have ergonomically developed our unisex blue light blocking Fitover frames as lightweight and slim as possible to be used in conjunction with prescription or reading glasses for the most comfortable fit imaginable. With DefenderShield Blue Light Blocking Glasses, you can feel confident that your blue light exposure is reduced. Features at a Glance: Extremely lightweight, durable, and flexible TR90 Fitover frames can be worn on top of most prescription or reading glassesWide, rectangular lenses block 50% and 99% of blue lightCR-90 lenses are lightweight and shatterproofAnti-smudge coating help lenses remain clear for extended useAnti-fatigue element boosts concentration and readability of small characters and improves screen contrastAnti-glare coating virtually eliminates reflections from the front and back surfaces of the lensesUnisex for men and women Amber / Yellow Lens Benefits: Filter 50% of blue lightBest for normal day-to-day use when blue light has less of an effectIdeal working on a computer, laptop, or tabletSlight amber tint that looks similar to regular glassesAllow colors within the visible light spectrum to look most naturalExcellent for use while driving in cloudy or rainy weatherSolution for those suffering from Electromagnetic Hypersensitivity (EHS) as orange lenses may over-stimulate the eyes Orange Lens Benefits: Filter 99% of blue lightIdeal for nighttime use, when blue light has the most effect, while viewing screens, from computers, laptops, tablets, cell phones and other electronic devicesImprove sleep quality by helping you fall asleep faster and promoting REM sleepOptimize your circadian rhythm so you wake up feeling well-restedPerfect for postoperative protectionOptimal for gaming The DefenderShield Fitover Blue Light Blocking Glasses are sized to fit comfortably over most reading glasses and other prescription glasses. This way, you don't have to choose between blue light protection and your favorite pair of glasses! The DefenderShield Fitover Blue Light Blocking Glasses feature lightweight, durable, and flexible TR90 Fitover frames with shatterproof CR-90 lenses. The DefenderShield Fitover Blue Light Blocking Glasses have an anti-glare coating that virtually eliminates reflections from the front and back surfaces of the lenses. Specifications: Specifications: Weight (lbs): .1 Eye Size (mm): 53 Bridge/Temple Size (mm): 17/136 Frame Material: TR90 (plastic polymer) Lens Material: CR-39 (plastic polymer) Style: Rectangle Fit: Standard