Duralex Picardie Tumblers, Set of 16 Set of 16 glass tumblers; (8) 10 7/8oz glasses & (8) 17 5/8oz 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 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