Duralex Made in France Prism Tumbler (Set of 6) 6 oz. Clear MADE IN FRANCE Since 1939. IMPACT & CHIP RESISTANT, EXTREMELY DURABLE Duralex tempered glass is 2.5 times stronger than ordinary glass SHOCK RESISTANT Manufactured to withstand sudden temperature extremes from -4 Degree to 266 Degree and is suitable for hot or cold liquids FREEZER, MICROWAVE & DISHWASHER SAFE. Adaptable modern glassware can go directly from the freezer to the microwave STACKABLE. Duralex glasses and bowls are stackable for convenient and space saving storage. HYGIENIC Nonporous Duralex glass does not absorb liquid TOP QUALITY Constant quality control guarantees excellence and built in durability insures that Duralex products will maintain their look for many years