Vinum Cuvee Prestige Champagne Flutes are made of 24-percent lead crystal by Riedel, highly respected fine glassware manufacturers. To be enjoyed to the fullest, Champagne should be sipped from a narrow glass that captures the bubbliness of the wine without letting too many bubbles and flavor escape at once. For your special moments or more formal dinners, these glasses are perfect for toasting any occasion. These glasses from Riedel are part of the Vinum collection, machine-blown, lead-crystal glasses whose forms are fundamentally different from all other glasses on the market. Hand wash for lasting results.