Designed in 2004, RIEDEL The O Wine Tumbler was the first varietal-specific wine tumbler in history. O is an innovative take on the casual wine glass, based on the benchmark shapes of RIEDEL's Vinum series. Better yet, the O Tumbler fits into every dishwasher so broken stems are a thing of the past.

The Cabernet glass is perfect for full-bodied, complex red wines that are high in tannin. The generous size of this glass allows the bouquet to develop fully and smooths out the rough edges. It emphasizes the fruit, playing down the bitter qualities of the tannin, and allows wines to achieve balance.

The Viognier/Chardonnay glass is perfect for allowing white wines to express their freshness, spiciness, and mineral characters. This glass is designed so the Viognier variety's low acidity is delivered in a way that sets off the alcohol and rich flavors of the wine. The shape highlights its velvety, supple texture, emphasizing the fruit and ensuring a long, balanced finish.