The AutoFlex 404UC Black Chrome are a stylish pair of glasses that feature rectangular shaped lenses rimmed in a lightweight yet durable black chrome metal frame. What makes these frames so special are the polarized clip on lenses that come with the frame. Magnets allow the clip on to be removed and replaced easily and with no fuss. They're perfect for those who frequently run in- and outdoors. For added comfort and style, these tough frames have adjustable nosepads, plastic covered stem tips - and even spring-hinges for added convenience!