I bought these hoping they'd remain fog-free, and with the photo lenses as well. The photo sensitive lenses don't seem to really be that photosensitive and don't really dim much. The yellow anti-fog lenses (the main reason I got these winter "goggles") fog up in an instant, and therefore I have had to remove them. Either this product is mislabeled, or the claims the manufacturer has to the quality of the design are misleading. Also, they are quite over priced for the cheap plastic used for the materials.
Pros: Multiple leanses
Cons: Not that easy to change lenses
This review was written in the old system and had content requirements that are different than reviews written today.