Drinique Caliber rocks 9. 5 Ounce glass - commercial bar/ restaurant quality drinkware, made in USA from 100% Tritan. These are unbreakable shatterproof plastic old fashioned glass used by some of the world's top bars, nightclubs, and restaurants. Space saving highly stackable design. Dishwasher safe. Freezer safe. Looks and feels like glass and will stay Clear, even after hundreds of dishwasher cycles. Lifetime against breaking and cracking. If it breaks, we replace it, for free.