Duralex Set of 6 Tumblers, Clear, 7.75-Oz. Set includes six 7 3/4 oz ounce glasses 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, refrigerator and microwave safe; Products maintain the original look for years <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store.