I have to agree with many others that have already commented. I picked up my first pair of Costas in 2001 and have literally worn nothing else since. They are great for reef reading, sight fishing, driving, you name it.

They have come a long way in that time, and now make both green and blue mirror lenses in plastic (less weight) as well as glass (heavier, but as mentioned, more scratch resistant).

I usually order from Amazon and if they don't fit, return them hassle free. It can be difficult to find a retail location that has all of their frames to try on.

Every few years I pack up whatever amount of pairs I have laying around that are scratched or need repair and ship back to have fixed. My wife enjoys reminding me that I have a Costa "problem" given the 11 pairs I own (that I haven't lost).

Just my two cents, but blue mirror seems to be better for offshore while green mirror seems to be better for shallower water. Either work great, and really cut down on eye strain.

Cheers,

EC