The advertising of the drivesafe shows clear comparisons to what you would see , in difference to bright lights without and reducing to minimal glare with the drive safe. All the advertising and people in the videos can not prove that the lens actually works. I decided to buy a pair with zeiss recommendation, this has turned out to be untrue. The product is a premium version of a slight tinted pair of sunglasses to describe. Zero reduction for halo and glare . I have contacted zeiss and have been told the product is opinion based for each person . What does this actually mean ? When your adversity is very clear to what is should do?? I contacted the head of marketing who promised to resolve my concerns, instead he did not stick to this and is avoiding my calls and emails. I highly don’t recommend you purchase this product even out of curiosity. Very disappointed in a major brand like zeiss. Certainly will never use again.