Clear gray photochromic lenses sunglasses have different styles indoor & outdoor,
the gold frame makes the sunglasses look lighter, it's elegant and gentleman-like.
【The lenses of the sunglasses are photochromic, the lenses are clear grey indoor, but when the sunglasses are under sunlight, the lenses would turn into dark gray.】
Remind you:
Do not place the sunglasses in the place with extreme temperatures such as cars, hot saunas or steam rooms. Or it may damage the sunglasses and deform the lens easily.