I just ordered my first pair of Zurich's and am impatiently waiting for them to arrive. However, in the last couple of years, I have bought mine at the drug store. You can find a cheap pair of sunglasses with gray plastic polarized lenses that seem to work fine. They have a wriap around frame and do a good job of keeping the sun out. I wear prescription glasses and the sunglasses fit right over them. They aren't a real fashion statement, but who cares as long as you don't lose your plane in the sun.