I am notorious for loosing or breaking sunglasses. At first I bought $250 Maui Jim's and Ray Bans, but after buying my 4th replacement, I moved onto a small boutique that sold NYS glasses. At $30 bucks a pop, I was buying handful of replacement glasses. But then, I found Sunglass.LA. They are half the price and come in polarized lenses. They fit perfectly and seem to hold up to my abuse far better than the NYS glasses. Now if I could convince Sunglass.LA to make some aviator's with the carbonfiber..