2 pairs of light blocking glasses Clear lenses for better sleep Description : Light - Square light glasses can reduce 90% of blue light, relieve eye strain, dryness, and protect your eyes from electronic products. Design - Our anti-strain glasses are made of high-quality composite materials, and the classic frame design is suitable for a variety of face shapes. Comfortable to wear - When playing mobile games or computers, it can reduce glare, filter harmful blue light, lightweight and more comfortable to wear. Alloy Frame - The frames of these glasses are made of alloy, plating, no fading, no rust and durable. Better sleep with advanced blue light blocking can prevent eye strain, reduce headaches and let you enjoy a quiet and deep sleep. Specification: Lens material: PC Lens function: anti-light Frame material: alloy Frame Width: 144mm / 5.67 inch Frame Height: 45mm / 1.77 inch Temple Length: 142mm/5.59inch Nose bridge: 19mm/0.75 inch All Black: Frame Width: 142mm/5.59inch Temple Length: 143mm / 5.63 inch Lens Width: 49mm / 1.93 inch Lens Height: 48mm / 1.89 inch Nose Bridge Width: 18mm/0.71 inch The package includes : 1 pair of black glasses 1 pair of All Black Frame glasses note : 1 . 2 . Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.