Product Name: Blue Light Blocking Glasses Sunglasses Flat Glasses Glasses lens material: PC Product function: decoration, anti-eye fatigue Frame material: PC metal Glasses weight: 12g Applicable people: unisex Color: black frame, blue frame,gun frame Product Specifications Product Dimensions: - Overall Glasses Width: 140mm Glasses Lens Width: 55mm Glasses Lens Height: 33mm Frame Height: 45mm Temple Length: 138mm Nose Spacing: 20mm. Do you face your computer or phone for more than 8 hours a day? Eye strain and dry eyes? Are you having trouble falling asleep and getting up the next day? Do you get headaches after working long hours? Reasons we need blue light blocking glasses: Anti-Eye Fatigue - Reduces eyestrain and light sensitivity when facing digital screens for extended periods of time. Get better sleep - Exposure to high-speed blue light can cause insomnia because it suppresses the production of melatonin, a hormone that helps regulate sleep. Wear blue light glasses and you'll sleep better. Reduce Headaches - Blocking harmful blue light and letting harmless light into your eyes can ease your headaches and have a great day. Glasses maintenance method: 1. Please wipe with a special cloth or paper towel for glasses to avoid chemical damage to the frame and lens 2. Please use both hands when wearing the frame to avoid deformation of one hand 3. Do not place it in an overheated place 4. If there is sediment on the lens, please rinse it with clean water first, and then dry it with a lens cloth or paper towel 5. When placing the glasses, please lift the lenses and put them in the glasses bag when not in use. Package includes: 1 pair of glasses, 1 pair of glasses cloth, 1 pair of glasses bag.{Worry-free after-sales service}?We believe in our products. If you have any questions about this product, please contact us. We will always be here to solve your problems. You try it without any risk!. {Sleep Better} - Wear blue light blocking glasses and you'll never have sleep problems again. It relieves eyestrain and headaches, allowing you to enjoy a restful, deep sleep. {PC HD Lens Anti-Reflection} - Ultra-lightweight and flexible material ideal for long-term comfortable wear. This lens is anti-reflection, non-prescription lens without chromatic aberration, restore true color. You can also remove the lenses at any time and replace them with the prescription lenses you want. {Protect Your Eyes} - These blue light glasses can protect and reduce glare, relieve the visual fatigue and discomfort caused by long hours of surfing the web, gaming and working under fluorescent lights. {Reduce Eyestrain} - Enjoy your digital time without worrying about eye strain, blurred vision and headaches. Because glasses block the most harmful blue light from computers, phones and TVs.