Plastic Margarita Glass - Classic 12 Oz. Unbreakable Polycarbonate Margarita glasses can be pre-chilled in your freezer, without the fear of them becoming brittle or fragile. Each unbreakable plastic margarita glass is 7 inches tall x 4 3/4 inches diameter. These clear, high-quality unbreakble plastic margarita glasses are sold by the individual piece (each), and are designed to replace fragile glass stems - no minimums required! Polycarbonate plastic margarita glasses are both freezer & dishwasher safe (top rack, regular or normal cycles only, no heat dry cycle).