I just got these glasses and I love them. I have a hard time finding sunglasses that look good AND that fit. I'm Asian, so sunglasses with a lot of curvature don't fit me well. These CDI's however, fit great. They're light and stay on my face well, even when I look downward. I really like being able to replace the lenses; it's like getting two pairs of sunglasses for the price of one. And, additional lenses are available. Also, it comes with a really nice case with a pouch to hold lenses. The only thing for me that could be improved is the neck strap. It's just a bit too rough on my neck, but not exceedingly uncomfortable.
I was trying to decide between these and the Wiley X XL-1. I'm glad I went with these. First, the CDI is made in the USA. Second, the manner in which the lenses are held in the CDI is better; you just slide them in and out. The XL-1 lenses are popped out by distorting the frame.
Pros: interchangeable lenses, light, fit well
Cons: neck strap is a bit rough on the neck
This review was written in the old system and had content requirements that are different than reviews written today.