Flex Memory Titanium and Spring Hinges Stylish frames, look good on any face. Blue Light Blocking:Anti-blue glasses can effectively isolate ultraviolet rays and radiation,which can filter blue light, suitable for use when watching computers or tv and phones Every pair of glasses is equipped with a very beautiful sleeve The design of the Bridge-Flex Memory Titanium and Spring Hinges ,With Silicone Nose Pads make you wear comfortable and durable,The weight of the whole pair of glasses very light, And the wearing will not make the face feel oppressive.Every pair of glasses is equipped with a very beautiful sleeve,Ensuring that our glasses are stylish and sleek for all occasions.