Polycarbonate is a great material for plastic wine glasses. It's very strong and highly resistant to scratching and breaking; in fact the cockpit canopy of the F-22 fighter jet is made of high-quality, optical polycarbonate. Polycarbonate is also ultra-clear, having better light transmission qualities than many types of glass. That's why we like these attractive wine glasses; they're practically indistinguishable from glass, until you drop one that is! The white wine has a 10-oz. bowl, the red wine has a 20-oz. capacity.