The Opera glass is a symbol of the timeless Made in Italy style. Opera, for over 30 years in RCR's history, has been characterized by a classic and timeless engraving. An ideal glass for sparkling wines, fruit salads, desserts and cocktails. Ultra-clear-The most transparent Crystal Glass Durable - Extremely resistant to breakage Lightness-A unique lightness given by pure raw materials Dishwasher safe-Dishwasher tested for more than 4,000 professional dishwasher uses Acoustic-Clear and lively crystal-like sounds Eco-Crystal-100% recyclable. Produced with respect for the environment.