MYKITA Handmade Glasses
I own a pair of Mykita Oskar glasses. They are made of titanium (so they are very lightweight), they are very flexible (so they can't be destroyed if you accidentally sit on them), and they look great. They are a little hard to find in the US because they are made in Germany and have limited distribution. But, I think you can find them if you go to a higher end optical shop in your local area. I haven't found anyone who sells their frames on the web.