Duduma RT2014 Computer Glasses Readers Reading Video Gaming Glasses of Anti Blue Light Eye Strain and UV Light Coating with Superlight & Flexible Frame (Black frame with yellow lens) How Does Duduma Protect Health: Duduma uniquely designed computer glasses include special anti blue ray lens with blue light filter coatings to reduce glare. Greatly helpful for the men women computer users who often end up withblurred vision, eye strain, headaches, and sore neck, sore shoulders or a sore back caused by leaning forward actions. Duduma Radiation Protection Lens Design: Strictly tested and analyzed with spectrometric experiments, Duduma anti glare galsseswith a modified lens power prescribed to block blue ray radiation, give the most comfortable vision for computer screen watching like readers reading, gamer video gaming. 100% polycarbonate lens insures optical clarity, visual fidelity and impact resistance. Duduma D6 Anti Blue Ray and UV Light Coating: Duduma blue light blocking lenses are processed with anti-reflective coating and anti-glare treatment, eliminate reflections of light from the front and back surfaces of your lenses; absolutely block UV light under 400nm and absorb harmful blue rays from 400-500nm emitted by computer screens that is associated with harmful glare. Ultra-lightweight and Optimum Fit Frame: Duduma frame creates a fully-customized fit and a perfect grip. While the lightweight design fit comfortable on face, the specially designed superlight legs provide ideal feeling and hold perfect on head without pressure, insures longtime comfort. Lifetime Breakage Warranty & 30 Day Money Back Guarantee: In case any broken problem happens, contact the seller of Duduma without hesitation to solve the problem until satisfaction. Duduma provides lifetime after sale service for all Duduma products. Customers can return and get refunded in case the purchasing is not satisfactory for any reason. You have no risk to try.