I ordered some non prescription photo-chromatic lenses on July 28th didn't receive until Aug 17th and the product I received is not changing in the sunlight at all, not even slightly. These are obviously not the product I ordered which is disappointing because i received several emails about my product going through various "quality control" steps. ( I guess one of those steps isn't checking to see if its the product ordered.) on top of that they wont start making the new lenses until they receive the old ones back adding even more time to the already lengthy process of production. Guess we will see what they send me next month...