Made in France since 1939 Impact & chip resistant, extremely durable Duralex tempered glass is 25 times stronger than ordinary glass Shock resistant manufactured to withstand sudden temperature extremes from -4 DegreeF to 266 DegreeF and is suitable for hot or cold liquids Duralex glass is very hygienic: it is non-porous and does not absorb liquids, colors or flavors Great for entertaining or everyday use Lead free, cadmium free, and BPA free Freezer, microwave & dishwasher safe Adaptable modern glassware can go directly from the freezer to the microwave