Luigi Bormioli Set of 4 Coupe Glasses - 300ml x 4 JAZZ GLASSWARE from Luigi Bormioli features an elegant faceted design for the new Golden Age of cocktail making. MADE IN ITALY with SON.hyx glass technology for strength, clarity, and brilliance: This high-tech crystal glass is made with extra properties to be even stronger, with better clarity. LONG LASTING: SON.hyx is more resistant to attrition from dishwashers than ordinary Crystal Glass and even Sparkx. EASY CLEAN: These four Negroni cocktail glasses are dishwasher safe and keep their sparkle. STUNNING DESIGN: They’re made with Titanium-reinforced stems to increase resistance to breakages.