It's crazy but it's true: The right glass makes wine taste better. Improving the taste of vino through glassware boils down to science: The right glass with the right bowl shape will capture the delicate aromas and flavors of the wine itself.
Glass made with these cheaper materials is more brittle than crystal or crystalline glass. This is also why, despite being thicker and ostensibly sturdier, cheap wine glasses tend to break more easily than expensive ones made with quality materials.