The tumbler, used for centuries as an all-round drinking vessel, is now turned into a sophisticated wine accessory. The designs of “O” are based on the benchmark shapes of Riedel Vinum. For the first time in glass history the design parameters such as shape of tumbler, size and diameter of rim, have been fine tuned to enhance the world’s most important grape varietals. Features: -2 White Wine Tumblers. -Lead-free crystal. -Machine-made. -Capacity: 20.75 oz. -Made in Austria. -Cleaning & Care: Handwashing Recommended. -Dimensions: 3.6″ H. Wine Recommendations:Chardonnay, Viognier.