?GREAT FOR COMPUTER WORK? -Anyone who works on digital screens such as computers and mobile phones for several hours a day and has difficulty falling asleep at night, then you need a blue light filter glasses. ?PRODUCTS SIZE?- Lens height: 43mm(1.70inches), lens width: 53mm(2.09 inches), bridge width: 16mm(0.63 inches), frame width: 140mm(5.51 inches), leg length: 143mm(5.63 inches). ?SAFE AND DURABLE MATERIAL?- Blue light glasses are made of TR90 frame construction and metal .TR90 is a plastic titanium material and an ultra-light glasses frame material.The TR material makes these computer glasses only half the weight of plastic glasses, and the durability is longer. ?BLUE LIGHT BLOCKING GLASSES?- Blue light glasses can reduce screen glare, reduce computer radiation, etc., can effectively ease dry and tired eyes, reduce blurred vision.At the same time it will make you sleep more comfortable. ?BLUE LIGHT GLASSES?- Blue light Eyeglasses can protect your eyes.when kids using a computer, iPad or smart phone.Blue Light Blocking Glasses can effectively block harmful blue light coming from phones, computer monitors, gaming devices. imported.