I love all things Oakley. I thought these were all metal frames including the temples(earpieces). The earpieces are plastic all the way up to the hinge piece. I'm not sure how these will hold up in the long haul, but if they have replacement temples I think they will be ok. They fit well, and you don't have to worry about the rubber 'unobtanium' moving around you or tear at the very edge like they do, one thing that's always irked about Oakleys. I recommend them