Discover Transitions® GEN S™, OPSM's perfect everyday lenses. Fully clear indoors and darkens in seconds outdoors, Transitions® GEN S™ adapts to light conditions amazingly fast providing optimal responsiveness every time, everywhere.​ ​To help you benefit from these lenses, for a limited time, enjoy 25% off Transitions® lenses & lens extras when purchased as part of a complete pair (frame and Transitions® lenses) until 7 September.