Set includes six 7 3/4 oz ounce glassesMade by the company that invented tempered glassDuralex is 2-1/2 times more resistant to breakage and chipping than normal glass, can also withstand sudden thermal shock: from -4-degree F to 212 degree FDuralex glass is very hygienic: it is non-porous and does not absorb liquids, colors or flavorsDishwasher, refrigerator and microwave safe; Products maintain the original look for years