"Bollé® CompetiVision® lenses are designed to mute every color in the spectrum except optic yellow, making the tennis ball pop so you can react more quickly. Darker than the standard CompetiVision Lens, CompetiVision Gun features a flash metallic silver mirror that cuts through glare on the court in bright conditions.DescriptionVigilante"s sporty looks let you keep a watchful eye on the horizon, and gives you the ability change your lenses as conditions dictate. It"s best suited for a medium to large fit and is already ready to go with your flow."