The TYR Special Ops 3.0 Transition Swim Goggles are engineered for triathlon and open water swimmers. They are packed with a range of state-of-the-art features including speed adjust technology, embedded anti-fog and wide peripheral range. The TYR Special Ops 3.0 Transition Swim Goggles transition lenses respond to changing light conditions by automatically transitioning color from clear for indoor use to smoke for outdoor use and vice versa.