The Oakley Covert Valve Sunglasses were designed for a balance between sport and lifestyle which makes them perfect for active duty personnel. The O-Matter frame is lightweight but durable and the Unobtainium technology enhances grip with perspiration. The snagless nose pads won't pull your hair and the Three-Point fit will secure the sunglasses on your nose and ears so that you don't have to take any attention away from the situation at hand. Made with Plutonite lens that provide impact resistance and 100% UV ray protection as well as protection from blue light up to 400nm. These sunglasses meet or exceed the American National Standards Institute for impact resistance, optical clarity and visual fidelity.