Grand 16 oz. Unbreakable Polycarbonate Plastic Tumblers and DOF Glasses are made of tough, unbreakable polycarbonate. These clear, high-quality unbreakable plastic tumblers are designed as an alternative to fragile glass, and are sold by the individual piece (each) - no minimums required! 4 3/4" tall x 3 5/8" diameter. Grand 16 oz. Unbreakable Polycarbonate Plastic Tumblers are microwave- and dishwasher- (top rack, regular or normal cycles only, no heat dry cycle) safe.