European glassmaker Riedel designs the shape of each glass to fully enhance the appreciation of the wine within. Oversized and extra-tall, each standing 9-3/4 inches tall and holding 30-3/8 ounces at full capacity, these glasses are designed especially to give wine plenty of breathing surface. At the same time, the modern diamond shape look sets these glasses apart from the typical wine stem. Machine-made from 24-percent lead crystal for superb brilliance and clarity. Dishwasher-safe; washing by hand recommended for optimal performance.