Duralex Made In France Cosy Glass Mug (Set of 6), 12.37 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 Duralex Cosy Mugs Feature a Classic Design that's Great for Entertaining or Everyday Use TOP QUALITY Constant quality control guarantees excellence and built in durability insures that Duralex products will maintain their look for many years