Vigilantes sporty looks let you keep a watchful eye on the horizon, and gives you the ability change your lenses as conditions dictate. Eagle vision 2 Dark: Darker version of original high contrast cinnamon lens. Ideal for bright days on the golf course. Eagle vision 2: High contrast cinnamon lens. Ideal Golf Lens as it highlights the breaks in the green. Best for low light conditions on the golf course. TNS : Neutral gray lens for bright conditions. Its best suited for a medium to large fit and is already ready to go with your flow.