Le Cadeaux Polycarbonate glasses. Elegant polycarbonate glasses and coordinating pitcher. Double weight and unbreakable, you won't believe it's not glass. Due to its extra weight, this does not feel like plastic to the hand. Designed to be unbreakable. As with any polycarbonate plastic dishwasher safe top rack, do not microwave. Imitating real crystal cut, this French inspired designed glassware sets a beautiful table or buffet.