Plastic Champagne Glass - Classic 6 Oz. Unbreakable Polycarbonate. A Sparkling Champagne Glass (Flute) for your sparkling wines. Your guests won't believe that these traditional European-styled Classic 6 oz. Unbreakable Polycarbonate Plastic Champagne Glasses (Flutes) are not crystal! These clear, high-quality unbreakable plastic flutes are sold by the individual piece (each), and are designed to replace fragile stems - no minimums required! 8 3/4 inches tall x 2 1/4 inches diameter. Unbreakable polycarbonate plastic flutes are dishwasher safe (top rack, regular or normal cycles only, no heat dry cycle).