Red wine glasses are characterized by their rounder, wider bowl, which gives the wine a chance to breathe. Red wine glasses can have particular styles of their own, such as:
Bordeaux glass: Tall with a wide bowl, and is designed for full bodied red wines like Cabernet and Merlot as it directs wine to the back of the mouth.
Burgundy glass: Larger than the Bordeaux glass, it has a larger bowl to accumulate aromas of more delicate red wines such as Pinot Noir. This style of glass directs wine to the tip of the tongue.
White wine glasses are generally fairly narrow, although not as narrow as champagne flutes, and with somewhat straight or tulip-shaped sides. The narrowness of the white wine glass allows the chilled wine to retain its temperature for two reasons: