3 Pack Blue Light Blocking Stylish Cat Eye Reading Glasses, Computer Reading/Gaming/TV/Phones Reading Glasses For Woman Anti Eyestrain & Glare Non Prescription Glasses Blue light blocking 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. Material : Plastic Frame, AC Lens,Spring Hinge Diopter available: 0 +0.5 +0.75 +1.0 +1.25 +1.5 +1.75 +2.0 +2.25 +2.5 +2.75 +3.0 +3.25 +3.5 +3.75 +4.0 Package includes: 3 x Reading Glasses + 3 x Pouches Please specify the frame color and lens strength when pay for this.Thanks! Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Size for manual measurement, there may be a 0 to 0.5 cm error, belongs to the normal phenomenon. 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.