The Riedel connoisseur will be surprised to find that this new glass series has something missing - there is no stem or base. Riedel "O" is the new innovative take on the wine tumbler. In short: "O" is the ideal glass for every day use and for every occasion. It is fun, feels good to hold, looks chic and its versatle and practical. The designs of "O" are based on the benchmark shapes of Riedel Vinum.