crgatv reading glasses 3 pack blue light blocking computer readers for women stylish cat eye design anti eyestrain & glare +1.75 strength crgatv 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.