Thanks IronRaven. I will be looking for the ANSI spec when I go shopping for sunglasses. I don't know if 40 bucks sunglasses have the ANSI spec though and I have a real hard time finding well fitting ones which have the correct curve. And having to spend a hundred bucks on each and every items that I need such as a Tilley hat and Bollé or Oakley glasses kind of ends up as being rather expensive. But it may be actually economical in the long run since it will last longer.

Frankie