Duralex - Prisme Tumbler 220 ml (7 3/4 oz.) Set of 6 Capacity 7 3/4 oz, Diameter 7.9 cm, Height 8.6 cm Duralex,shock resistant tempered glass, is 2.5 times more resistant to breakage and chipping than normal glass, Can also withstand sudden thermal shock, from -4 F to 212 F Duralex glass is very hygienic. It is non-porous and does not absorb liquids, colors or flavors Dishwasher, refrigerator and microwave safe. Products maintain the original look for years. Made in France.