Read more LifeArt blue light blocker lenses made with a special blue-light blocking polymer from Leybold Chemicals, the lens material manufacturer, that is directly incorporated into the lens materials, which means the blue light blocking technology won't chip or wear away. By absorbing blue light, this polymer prevents blue light from passing through the lens to your eye. LifeArt Blue Light Blocking Glasses: Improves Your Digital Life Over 7 hours a day in front of digital screens such as computers and smartphones, exposes you to harmful blue rays, causing eye strain, blurred vision, red eyes, migraines and sleep deprivation. The LifeArt Optical lens technology helps to Enhance visual comfort with improved contrast & reduced eye strain Eliminates glare with premium AR and UV protection Ultra-light frame, stylish and comfort design Value pack with free eyeglasses case, cleaning cloth, small screwdriver, ear hooks, blue light blocking test kit included Read more Product highlight Relieve digital eyestrain with blue light blocking lens Prolonged exposure to high-energy visible (HEV) blue light can lead to eye strain and blurred vision. LifeArt blue blocker lenses reflect and filter the blue light emitted in artificial light. Virtually clear with high light transmittance Unlike typical blue blocker lenses which have a very noticeable yellow or orange tint, LifeArt lenses comes with a a super hydrophobic anti-reflective coating, the clear blue-light-blocking lenses with only a slight tint. Greater durability with advanced coating technology Cutting-edge lens coating technology, the multi-layer coating is combined into a single layer with a thickness of only 10um, which increases the surface hardness of the lens, prevent scratches and abrasion while reflecting harmful light, making it thinner and durable. Read more Great Elasticity of the Frame Keeps its Initial Balance and Adjustment Misalignment can be caused by dropping or bumping your glasses, and heat deformation. Set your eyeglasses upside down on a flat surface. The temples (ear pieces) should both rest on the table. If one of the temples is elevated off the table, it needs an adjustment to match the other temple. Apply light pressure to the area where you need to make an adjustment. Be careful not to press too hard. TR90 Resin materials can be bent and twisted and still come back to its original shape. This frame features a spring hinge, which keeps its initial balance and adjustment, thereby avoiding the need for subsequent adjustments. Read more Recommend Good Product Metal Glasses Kids Glasses 4 Pairs Reading Glasses Blue Light Blocking ✓ ✓ ✓ ✓ ✓ Anti UV400 Ray ✓ ✓ ✓ ✓ ✓ Anti Eyestrain ✓ ✓ ✓ ✓ ✓ Anti Glare ✓ ✓ ✓ ✓ ✓ Frame Material TR90 TR90 Metal TR90 TR90 Lens Material Resin Resin Resin Resin Resin Multi Magnification ✓ ✓ ✓ ✓ ✓ Weight 11.0g 12.1g 9.5g 8.5g 16.44g