Transition lenses don't
I have seen all kinds of lame products, but these glasses take the cake. I bought no-line bifocals with the transitions lenses that are supposed to darken in sunlight.
My glasses don't. I took them back to the store and they told me to put them in the freezer first. So I did that, and they darkened in the sun. But the next time I wore them outside, they wouldn't darken again.
So I guess they expect me to always have a freezer handy or buy another pair so I can keep one frozen. What a ripoff!