Best Sunglasses I have ever owned.  I started with Raybands in the mid 80s moving all the major brands since.  Costa is hands down the best.  If you are a water person, Costa's are a no brainer.  Update - I swap sunglasses like shoes, matching my attire and reduce ware.  It has been 18 months since I purchased and wrote the above review.  The glasses rubber ear pieces are now falling off.  Contacted Costa, and was treated like a child. The arrogance and rudeness displayed was very surprising.    These where the 2nd of 3 pairs I had purchased.  I have sold off the other 2 and will never purchase Costa's again.