Riedel O Chardonnay/Viognier Pay 3 Get 4 Glasses Stylish, practical and fun. Riedel O is the original varietal specific wine tumbler. This stemless wine glass or 'tool' is specific for Viognier/Chardonnay. Lead free. Machine made in Germany. Wonderfully packaged, this is an ideal gift set. MPN:7414/05