I bought a set of Oakley Juliet titanium sunglasses in the late 90's, and have been wearing them ever since. I have sat on them, stepped on them. and crashed on them (the glasses were compressed between my chest and the pavement, and broke two of my ribs). But the glasses refuse to break. Once every few years I send them back to Oakley to get them refinished. I got them new, at dealer cost for some $180, and it was one of the better investments I have made.