Most of our Costas are hand assembled in USA, because we have yet to find a
machine that does the job as well as a real, live person. We receive parts for our sunglasses
from all around the world
Costas assembled in USA are examined by no fewer than eight pairs of eyes before they ever
shield yours. It's the only way we know how to keep the high standards we need to confidently
back every pair of Costas with a limited warranty. See our Limited Warranty landing
page for limited warranty details and limitations.