【UPGRADE SPRING HINGE】The upgraded elastic hinge can accommodate a larger head circumference. Cyxus blue light lens is made in a lightweight Polycarbonate square frame and PC Lens. Our clear PC lens is 30% lighter than resin lens and 50% lighter than glass lens. At the same time, PC lenses are safer than glass lenses. Its impact resistance is 60 times that of glass lenses and through the falling ball impact test, the lens is not easy to break. 【BLUE LIGHT ABSORB】Cyxus blue light filter glasses lens are crafted from HEV-absorbed technology and radiation protection membrane, Anti-reflective membrane, Nano waterproof membrane. These blue light glasses for women can absorb the harmful blue light between 380nm and 450nm and release beneficial blue light. Square blue light glasses can prevent light reflection and avoid eye pain. 【UV PROTECTION GLASSES】The blue light women's glasses can also be 99% UV blocking. not only maintains high light transmittance but also filters out annoying glare for better work/study/entertainment. Computer glasses can relieve eye fatigue, headache, protect some retinal cells and reduce the risk of macular degeneration. 【HEALTHY FOR EYES】Anti-glare computer glasses is suitable for women and men. anti-fatigue blue light blocking glasses are useful for computers, laptops, or smartphones, the glasses can protect the eyes from computer visual syndrome (eyes losing focus, vision getting unclear, fatigue, ophthalmic acid, bulging, et). 【LIFETIME WARRANTY】All Cyxus customers enjoy 30 days of free trial and a lifetime warranty guarantee and return or replace the product you are not satisfied with for any reason. Please feel free to contact us if you have any questions！