Duralex Unie 560ml / 20oz/ Pint Glass Tumbler Goblet, Set of 2 Duralex glass is very hygienic: it is non-porous and does not absorb liquids, colors or flavors The original french tumbler, made by the company that invented tempered glass Dishwasher, refrigerator and microwave safe; Capacity; 560ml / 250g Duralex is 2.5 times more resistant to breakage and chipping than normal glass, can also withstand sudden thermal shock: