Set of 2 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. This product is made of clear crystal glass. Vinum is RIEDEL's basic varietal specific stemmed series. Designed in 1986 by 10th generation glassmaker Georg J. Riedel, Vinum was created to ensure every wine lover could afford varietal-specific glassware. Based on the handmade Sommeliers range, machine production means Vinum can be offered at a more accessible price. This item is premium machine-made. “PREMIUM” defines the advantage of a machine blown RIEDEL glass vs. a hand-made glass. The difference lies within the precision.