The Nautica N4016 Navy are a stylish pair of eyeglasses that feature narrow stylized rectangular shaped lenses rimmed in a lightweight yet durable super dark navy (almost black) 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, marbled plastic covered stem tips - and even spring-hinges for added convenience!