Blue Light Glasses Blue Blocking Sunglasses Computer Gaming Protection Eyewear Features： Fashionable cool look, Fit most face shape and size Strong Spring Hinge Design for Durability and comfortable to wear it all day Relieve Digital Eye Strain to Help You Work Better Blue Light Blocking Computer Glasses Prevents Tiredness while working and looking at a computer screen or cell phone Helps You Sleep Better - Wearing these glasses in front of a computer or cell phone before you sleep can help serotonin levels and provide a more comfortable sleep. Specifications: Type: Glasses Frame Color: Black, Clear, Transparent Grey, Transparent Pink, Transparent Tee Len’s Color: Clear Frame Material: ABS Lens width: 50mm Lens height: 49mm Frame width: 144mm Leg’s Length: 148mm Bridge (DBL): 20mm Lenses: Aspheric Package list: 1 Pair of Glasses