We do not recommend using a dishwasher for any crystal glasses. The Waterford Crystal Ardan Tonn Wine glasses are a generous size wine glass and are suitable for drinking White, Rose or Red Wine. This striking modern design is inspired by the rivers and streams that flow from the mountains to the Atlantic Coast near to the home of Waterford Crystal. These wine glasses should be used for all occasions and not just kept for best. it will make wine drinking even more pleasurable.