Add style and strength to your glassware collection with Jazz old-fashioned tumblers from Duralex. These toughened glass tumblers are ideal for establishments needing a more robust option. They offer enhanced strength and resistance, being 2.5 times stronger than ordinary glass, and if broken, they shatter into small, non-sharp pieces to minimise injury risk. Able to withstand temperature extremes from -4deg F to 212deg F, Jazz glasses are perfect for hot or cold beverages and are both microwave and dishwasher safe.