✓GUARANTEED QUALITY?:Products can replace free within 90 days after sale if it cannot use due to the quality problems in the precondition of non-artificial damage.Customer satisfaction is always the driving force of our progess. ✓Convenient & Great price?:3 pack of readers great for office, car,or bedside use. Keep a pair at your desk, in car and bedroom. ✓DESIGN?:Stylish round design will meet your need to look cool,beautiful and makes you shine.Light weight frame and flexible spring hinge temples, ensure a comfortable fit without uncomfortable pinching. ✓PRODUCT FEATURES?:Anti-blue light glasses can effectively reduce the continuous damage of blue light to the eyes. After using anti-blue light glasses, the intensity of blue light emitted by mobile phones, computers and other screens is effectively suppressed, reducing the damage of harmful blue light to the eyes. ✓Item Dimensions?:Lens material: AC(No glare & Clear vision),Lens width: 47mm/ 1.85in,Lens height: 39mm / 1.54in,Frame material: plastic(no smell).