re: Which Costa glasses does the OB wear?

I like them a lot. The only complaint I have is they dont get dark all the way while driving, because the winsdshield blocks the uv rays. I mean they get dark enough to knock of the glare, but not super dark.

As far as them changing, they're great, as soon as I walk outside, they're sunglasses. I haven't put my contacts in since I bought them.