The Pit Viper The Exciters Sunglasses feature Dual Lens Technology™, which is either 200% or 100% more lens than a regular Pit Viper depending on how you feel about math. Round lenses and Brook Shields give them a classic glacier glass look, and the rubber touchpoints on the nose bridge and ear pieces keep them locked in place through whatever questionable decisions your day involves. Just maybe don't wear them while driving.