The O Restaurant series means broken stems are a thing of the past. Based on the classic RIEDEL series, Vinum, these stemless tumblers are the ideal glasses for casual use. With its elegant, uncomplicated design, “O” represents RIEDEL's most informal collection. The “O” glasses easily fit into the dishwasher, the picnic basket, the mini bar or the small kitchen. Without stems that can break or make it easier to knock over a glass, "O" is perfect for hotels and restaurants.

The aptly named "Happy O" is a cheerful addition to the "O" collection, perfect for water, juices and other soft drinks. "Happy O" is available in eight attractive colours to enhance the mood and brighten the table, tinted only at the base of the glass so as not to impact what’s within.