(Wholly unflattering photo of me--I hadn't slept much the night before.)
They're light. (As I expected because they're made out of titanium.) They're so light that after a while I hardly notice I'm wearing them, except for the impact on my periphery vision. The first time I got to see myself properly in my new glasses yesterday and I thought, "Neh." Maybe I'll look better in them when in a shirt and tie? My old round glasses formed such a significant part of my self image, it will take me a while to adjust. I'm told these are much more fashionable, and I wanted smaller lenses anyway.
Byron just weighed them. My old glasses came in at 24g and my new ones (with a stronger prescription) are 17g.