Sal D.wrote a question about Costa Maya Polarized Sunglasses - Costa 580 Glass Lens - Women's on February 29, 2012
I do a lot of stream and river fly fishing and am looking for good sight fishing glasses. I looked at the Costa site and they have 4 lenses that might work for my application. Two listed for "sight fishing" and one listed for "freshwater" and another for "rivers and streams". What is the difference? Which to choose?