The whole point of wearing a goggle is to protect your eyes and keep debris out. Even the tiniest particle making it in to your eye at the wrong time can be a catastrophic event. The Oakley L-Frame goggle is made specialized with closed-cell foam to provide a guaranteed tight fit so nothing will get in your eyes. This goggle comes with a clear lens for low light conditions and a grey lens for medium to bright light situations. Both lenses are coated with anti-fog treatment on the inside and high-grade Lexan on the exterior to minimize scratching. And if you wear prescription, we offer a prescription insert that we can custom make for you to fit this goggle!