The Spotters Riot Men's Sunglasses deliver incredible depth perception and sharper vision, without changing your colour perception. They use Spotter's Nexus Mirror - a high definition emerald green base tint crown glass lens. That tint is designed to sharpen the edges of objects, increase your depth perception, and deliver better visual definition. Even better, it doesn't alter your colour perception - you'll see all colours the way you're meant to. The Green Mirror is placed between layers of the glass, so it can't be damaged or scratched off. With a stylish Riot frame, these sunglasses are a great pick for clear vision under harsh sunlight.