Costa has terrible customer service. I spent $249.00 at West Marine for the 580 g Costa del mar, green lens glasses on 04/11/18. I did not receive a case or box because the end vendor, West Marine, could not find them.
I contacted  Costa customer service and the parent company Essilor, who interestingly, has a consumer relations history littered with unfair trade practice law suits--NICE!. Costa's reply:  "You can purchase the case on our site--we sell the glasses for $250.00, I don't know why you paid $249.00?." Summary: no comping of a case on a $249.00 pair of glasses from a registered end vendor!. Boy oh boy, oh boy--Costa! I SEE A STEEP BELL CURVE IN THE EVOLUTION OF YOUR COMPANY.

  Also,
 these glasses cast blue patches of light on vehicles when using your rear view mirror, driving. I thought I was in front of a police funeral, the first time I wore them. Mine are real, so forget that argument. Besides that, they are nice sunglasses. I will buy non-Essilor instead of re- glassing when the lenses are shot. That will be tough because they just got approved to merger with luxottica and now own a quarter of the world market cap for eyewear-- think Varilux, Oakley, Ray Ban. This is what happens when quarter share monopolies are allowed to thrive by the EUROPEAN and AMERICAN trade oversight committees.  So, the consumer loses options and the corporation assumes more control than is morally and ethically righteous. Essilor/Costa--listen up: "You lose a customer for life!-- Enjoy my case!!"