This pack of 6 Crystalex Bohemia Diamond 7.5-Ounce Tumblers is made from original Bohemian glass (Bohemia crystal), which is well known around the world for its beautiful look and high quality. Each tumbler has a total capacity of 230 ml (7.5 ounces) to serve whiskey, bourbon, cognac (brandy) or liquor. The elegant and distinctive diamond design makes them a perfect gift for friends or an excellent addition to your own drinkware set.