Item Description Feature Blue Light Blocking Glaes protect your eyes from harmful blue rays, electromagnetic wave radiation, and UV glare. For those who face computers, laptops or smartphones all day, these glaes are eential for the eyes. These glaes effectively block 90% of blue rays, reduce eye strain and other visual syndromes (blurry visions, bulging, headache, dry eye, declined visions, etc.). Made with PC lenses, these blue light glaes are ultra-lightweight and comfortable to wear for men and women. You won't feel heavy on your nose when playing games, surfing the Internet, or working on your laptop for hours. By wearing blue light blocking glaes, you can avoid eye fatigue, dizzy head, headache, etc., and therefore have a better sleep at the end of the day after a long time staring at digital screens. The lightweight glaes means you'll have a pair handy wherever you are. Specifications Features:Ultralight Reading Glaes Anti Blue Light Presbyopia Eyeglaes Women Men Unisex Optical Eyewear Notice:For manual measurement, please allow 1-3cm error Spectacle lens degree:100-300 Overall length of glaes: 139mm; lens width: 52mm; frame height: 41mm; nose spacing: 18mm; temple length: 140mm Color:black gray,black red,orange Lens: PC; Frame: TR Package Includes:a pair of glaes Note Dropshipping is highly welcomed,No invoice or promotional materials included