• Manufactured in France since 1939, Duralex glasses are extremely durable and resistant to impacts and chips. • Duralex tempered glass is 2.5 times stronger than ordinary glass, withstanding extreme temperatures from -4°F to 266°F. • Suitable for freezer, microwave, and dishwasher, these glasses can go directly from the freezer to the microwave. • Stackable design for convenient and space-saving storage. • Duralex glass is hygienic and non-porous, preventing liquid absorption. • High quality guaranteed by constant quality control, ensuring that the products will maintain their appearance for years. • Lead-free, cadmium-free, and BPA-free. • Glass measurements: 9.2 cm in height, 8.6 cm in diameter.