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 emphasises the fruit, playing down the bitter qualities of the tannin, and allows wines to achieve balance. Designed in 2004, the RIEDEL O 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. Riedel have launched a collection of value packs to celebrate this momentous occasion, featuring some of our most popular products in festive new packaging. Have someone you’d like to celebrate? Gift them a RIEDEL Anniversary Set. Machine-made and dishwasher safe.