Set includes six 8-3/4-ounce glasses * The original french tumbler, made by the company that invented tempered glass * Duralex 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 F * Duralex glass is very hygienic: it is non-porous and does not absorb liquids, colors or flavors * Dishwasher, fridge and microwave safe; Products maintain the original look for years