Review on BlazerBuck Polycarbonate Replacement BMD0006 Sunglasses by Frank Villanueva

Transparent indoors (people may see a slight lens tint) and will darken depending on the amount of bright sunlight hitting outside. Pretty quick transitions. Brighter and straighter = gets darker, but never comparable to original Bose lenses. If you want to darken a prescription-quality transitional lens, you're unrealistic. If you need functional indoor/outdoor lenses that fit your frame well, Alto is a great option.