Used in many occasions. Now whether it is work or online courses. The blue light of electronic products will always harm us, so a pair of blue light blocking glasses will help you block these harmful blue light and protect your eyes. Do you have a headache from the long screen display? anti-blue light glasses can block harmful blue light while allowing all other beneficial light to enhance your health. Exposing your eyes to harmful blue light for a long period of time usually makes it difficult to fall asleep,poor sleep quality. However, 's blue light glasses can block harmful light and improve the quality of sleep, so that you no longer have to worry about sleep difficulties caused by electronic products. The package includes: (1 x paper package)(1 x glasses cloth ) (1 x blue light test paper )(2 x high-quality blue light glasses) The culprit of vision syndrome (dry eyes, eye fatigue, trouble sleeping, migraines, headaches, etc.) is blue light from digital devices. Anti-eye fatigue Reduce headaches Improve sleep quality?Worry-free service?: All customers enjoy a 30-day money-back guarantee. If you have any questions, please feel free to contact us. We will help you solve the problem until you are satisfied. You do not have any risk of trying, we will provide you with the best service!. ?Blue light filter lens?: Prolonged exposure to blue light can cause eye fatigue, blurred vision and headaches. After using our anti-blue glasses for a few days, you will find the difference. Because glasses will block the most harmful blue light emitted by computers, mobile phones, TVs and other electronic devices. ?Improve sleep?:Long-term exposure of the eyes to blue light will slow down or stop the production of melatonin, resulting in sleep disorders. blue light glasses can prevent your eyes from being invaded by blue light and provide you with better sleep. ?Two pairs of high-priced glasses?: Blu-ray glasses provide a variety of colors for you to choose, you can find the color you need from here. Keep a pair of glasses in the reading area you need, or share a friend or family member with you, economical and convenient. ?High-quality material?: Our lenses can not only block more than 95 of harmful blue light (400-440nm), but also have a high transmittance (95 ), achieving a perfect balance between eye protection and visual experience. The retro fashion half-frame design and silicone nose pads will not put pressure on your nose, ensuring long-term comfort.