Duralex - Unie Clear Glass Tumblers, Set of 6 (200 ml. ( 6.8 oz. )) Capacity: 6.8 oz, Diameter 2 5/8 in. Height 4 1/8 in. 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 their original look for years. Made in FRANCE.