• Plastic frame
• Plastic lens
• non-polarized
• Lens width: 52 millimeters
• ANTI BLUE LIGHT- Block blue light and relieve eye fatigue associated with digital screens
• BETTER SLEEP- Blue light reduces melatonin production which makes you sleepy. Less blue light = deeper sleep
• Standard Adult Shape Glasses. Measurement - 135mm frame width, 52mm lens width, 33mm lens height, 18mm bridge. Non Spring Hinge Design
• Package contain 3 blue blocking glasses as pictured.