Computer Blue Light FilterGlasses UV Headaches Lightweight Frame Eyeglasses TR90 Product Features Cyxus Computer Blue Light Filter Vintage Retro Glasses , Anti Eye Strain Eyewear UV Headaches Lightweight Frame Eyeglasses TR90, (8183T29,Tea brown) ANTI BLUE LIGHT --Cyxus blue light filter glasses can block the blue light effectively and make you enjoy your digital time; PC LENS-- Glasses lenses are high-end space PC lens with SHMC technology, shock resistant and water proof, dust free and easy to clean. They are lighter, more ductile, not easy to break and impact resistant; SLEEP BETTER--Reduce your eye eyestrain, no worry about eye fatigue, blurred vision and headache from digital screen. Guardian for your health and make you sleep better; GUARANTEE--With the lifetime warranty card, you can return the defective products for repairing or exchanging for free at any time (not include accident man made damage); Product Description ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Our stock all ships from our US-based warehouses.Shipped via UPS or USPS(depending on location and package weight) Unless stated otherwise, all orders will ship within 24 hours of your payment being processed.Check our feedback to see the great reviews of FAST shipping we offer.Shipping is always FREE If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. If you have any queries, please contact us via eCRATER. We usually respond within 24 hours on weekdays. Thank you for visiting our eCRATER store!