[widebody911]

I've had them for a few years now and I love them. As JYL said, they don't get as dark as normal sunglasses, but on the flip side you don't have to worry about carrying/finding/breaking/losing a second pair of glasses. One other strange thing, which I've learned to live with, is they will go dark at times when you don't expect it, like on days that are slightly overcast; I guess whatever wavelength of light that triggers the reaction is still getting through.