K KENZHOU Blue Light Blocking Computer Glasses 2 Pack Anti Eye Eyestrain Unisex(Men/Women) Glasses with Spring Hinges UV Protection (Twilight and Red) PACKING INCLUDES: 1. Two pairs anti-blue ray computer glasses, which can minimize the eyestrain caused by harmful blue ray emitted from digital screens. 2. Complimentary frame packing cloth bag and cleaning cloth.PREVENT HARMLFULL BLUE RAY: K KENZHOU anti blue ray glasses can effectively obstruct injurious blue ray, electromagnetic wave radiation, and ultraviolet rays. No matter it?s computers, laptops or smart phones, the glasses can always help to prevent harmful blue ray the screens emitted, protecting eyes from invisible injurious blue ray. So that the glasses can protect the eyes from computer visual syndrome (eyes losing focus, vision getting unclear, fatigue, ophthalmic acid, bulging, et).REDUCE EYESTRAIN & VISUAL SYNDROME: By preventing the injurious blue ray, K KENZHOU glasses can protect the eyes from computer visual syndrome (eyes losing focus, vision getting unclear, fatigue, ophthalmic acid, bulging, headache, etc.). So you don?t need to worry about hurting your eyes (getting myopia or vision getting declined, or other visual syndrome), just enjoy your digital time.COMFORTABLE WEAR: the frame wears very comfortable, and the lenses? light transmittance is very good. Furthermore, casual frame design keeps you looks professional and fashionable while working or reading.100% NO RISK WARRANTY AFTER SALE: in case of any question or problem, please contact the seller without any hesitation to solve until satisfaction. We provide 100% no risk, worry-free warranty after sale service for all K KENZHOU glasses. You can return and get refunded for no reason. Customer satisfaction is our priority. All of our electronic devices give off excessive quantities of blue light (smart phones, tablets, laptops and desktop computers). This blue light messes with your internal clock and stops your body from naturally producing melatonin, the hormone that helps us fall asleep late at night. K KENZHOU glasses block the most harmful types of blue light helping our body keep its natural schedule. The lens with a slightly yellow can better protect your eyes and prevent fatigue.This allows you to have an optimal viewing experience without the nasty yellow glare that can occur with inferior glasses. The lens was made of a fully transparent base, while maintaining high light transmittance. Less reflective, no affect reading, and giving you get the optimal viewing experience without any color distortion. K KENZHOU glasses are essential for anyone using an electronic device daily. Each lens comes with layer coating designed specifically to reduce glare, reflect blue light away from the user and relieve long term eye strain caused by excess electronic device use.If you are using your phone or computer late at night and have trouble sleeping you would notice a difference almost immediately when you first try K KENZHOU computer glasses.Just Anti-blue glasses,Not anti-blue reading glasses.only minimal yellow tinting,Just a pain free screen experience that lasts all day! Please note: The cleaning cloth of blue light blocking glasses will have a little fade. Shipping Weight: 4.8 ounces (View shipping rates and policies) TOP BRANDS Payment Shipping Returns Contact Paypal PayPal is our preferred method of payments it's the quickest, easiest and most secure way to pay for your goods or services online. PayPal offers buyer and seller protection should there be a problem. If you do not have a PayPal account, to get started and buy your first item with us is very easy. Simply click on the 'Buy It Now' button and follow the eCRATER checkout steps. Select PayPal as the payment method you then will be given the chance to enter your card details in to PayPal's secure checkout in order to pay for your order. Once the payment has been made, you will then be given the opportunity to make your own PayPal account to make paying for your items in the future very easy. Should there be a problem with payment please do let us know.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!