OEM Walsoon Motorcycle Goggles Outdoor Sports Sunglasses (Black with Blue Frame) Available for replacing short-sighted lens PC frame with polycarbonate lens for impact protection Interchangeable lenses are available in various colors Incorporating UV400 against UVA, UVB, and UVC,Soft foam cushions eyewear to face for comfortable wear How to choose to use the lens at different: &lt;br&gt; 1&gt; Dark Polarized Lens:It makes the outside messy radiation light, scattering light, and water filtering light into the soft direct light, so that they no longer harm your eyes.&lt;br&gt; 2&gt; Blue lens: Blue lenses can improve visual contrast and clarity, in the case of serious air pollution or foggy,you can wear it.&lt;br&gt; 3&gt; Transparent Colorful lenses:High density color lens coating can reflect more light, transparent color is suitable for cloudy or rainy day.&lt;br&gt; 4&gt; Colorful lens: It can absorb purple and cyan light, and can absorb almost 100% ultraviolet and infrared, can block the reflecting light coming from the smooth & shiny surface, wearing glasses can still see the subtle part,it is the ideal choice for drivers.&lt;br&gt; 5&gt; Yellow night-vision lens: Strictly, yellow lenses are not sunglasses, because it almost does not reduce visible light, but in the foggy and dusk, yellow lenses can improve contrast, provides a more accurate video, it is also referred to be the "night vision chip",it is suitable for driving, cycling or walking at night.