The TYR Special Ops 2.0 Transition Swim Goggles lets you outsmart mother nature with the goggles. Advanced photochromic technology responds to changing light conditions by automatically transitioninglens color from clear (for indoor use) to smoke (for outdoor use) and vice versa. These goggles allows 100% performance whether the sun is shining brightly or hiding behind clouds. All polycarbonate lenses include full UVA/UVB protection. These feature durable, hypoallergenic DURAFIT silicone gaskets that provide a comfortable, watertight seal and maintain their shape over time. They also featureembedded anti-fog, a unibody design and a wide peripheral range for optimal sighting. Engineered fortriathlon, open water and training.