Transitions® is lens option that allows your lenses to get darker when you go outdoors. Transitions is a great option to allow a clear (also known as “ophthalmic”) pair of glasses to serve as sunglasses in outdoor environments. There are several types of Transitions® technology available. For the patient on the go, Transitions® Signature™ is a great choice for having sunglasses and regular glasses all rolled into a single convenient pair of glasses. Step outside, and Transitions® Signature™ technology makes the lens darker. Return indoors, and the lens quickly grows clear again. Transitions® Signature™ is available in its standard form as well as Transitions® XTRActive® which gets especially dark outdoors, and even darkens behind your windshield. Transitions®’ latest technology is Transitions® Vantage™ which acts similar to Transitions® XTRActive®, though it also incorporates polarization.