Quote Originally Posted by dustyg View Post
Keep in mind when picking custom frames, the glass lenses are heavy. They feel 10-20x as heavy as my polycarbonates, though I'm sure Mike's got a better idea of the ratio.
Only about twice. Polycarb has a density of 1.2, glass is 2.5 (grams per cubic centimeter)

BUT, the size of the lens that fits into the frame is everything.