The handy machine-made oaked chardonnay glass of the space-saving glass collection O wine tumbler attracts attention through its stemless design. This makes it less susceptible to glass breakage and easy to put into the dishwasher. The size of the bowl allows space for the rich bouquet to develop its superbly diverse range of aromas, while minimizing the risk of becoming over concentrated. “O” Is the ideal glass for everyday use and for every occasion. It is fun, feels good to hold, looks trendy and it works! All Riedel glasses are dishwasher safe.