TIVSAN Blue Light Blocking Nerd Glasses' Lens Effect.
1. Blue Light Blocking for Children -- Glasses lenses are designed with advanced HEV-Adsorb substrate absorption technology, which can block harmful blue light in daily life.

2. Stylish Frame -- Ultra-lightweight metal material for durability and comfortable long-term wearing,Corrosion Resistant,Not easy to fade, fashion and sturdy.

3. Product Dimension -- Lens Width: 48mm(1.88inches) | Lens Height: 32mm(1.25inches) | Temple Length: 130mm(5.11inches) | Nose Bridge: 16mm(0.62inches).

Why We Need Blue Light Blcoking Glasses?
Anti Eye Fatigue:Long time exposure to blue light would lead to digital eye fatigue. Wearing these blue light blocking glasses, no more tired eyes. Reduce eye strain and sensitivity to light when facing digital screens. Great for office workers or anyone who has to look at screen all day.
Minimize Headache: these blue light blocking glasses will supercharge your health by blocking detrimental blue light while letting in all other beneficial light.
Better Sleep: Exposure to high rate blue light will impact our sense of circadian rhythms and wreck our internal rock, then cause insomnia. Wearing these blue light filter glasses will improve your sleep, help you sleep better and feel good everyday.
What You Will Get:
1* Blue Light Glasses
1*Glasses Pouch
1*Cleaning Cloth