From the manufacturer: Welcome To Riedel: The company RIEDEL is a family owned, 300 year-old crystal company known to be the inventor of varietal specific stemware. Riedel is the first company in history to recognize that the taste of a beverage is affected by the shape of the vessel from which it is consumed, and has been recognized for its revolutionary designs which complement primarily alcoholic beverages. Swirl - a wavy shape with subtle curves: This series has been named after the ease with which they enable the wine to be swirled. This is because the Swirl series has a wavy shape with subtle curves, meaning the glass sits in the hand better and allows the wine to be swirled in the glass particularly well. With a tiny hand movement the wine is effortlessly opened out and aerated with each gentle swirl. The versatile stemless glasses are also the perfect choice for other drinks, such as water and juices, etc. Product Description: FUNCTION MEETS DESIGN - The Swirl design is an invitation to feel the natural shapes of the decanter! Sits firmly in the hand while swirling, helping to aerate the wine. This design also means that every time you pick up a glass it is a real experience. Reasonably priced and ideal for everyday use. Perfect for wine, juice and water. From a simple wine glass to a glass which is a pleasure to drink from: every Riedels collection arises out of sensory workshops designed to engage all the senses. No other name is as closely associated with European glass art and glass technology as that of RIEDEL. That's why every glass bears the Riedel lettering as a unique distinguishing feature. The machine-made red wine glass of the slip-proof glass collection Swirl is reasonably priced and ideal for everyday use The glass is easy to hold due to its wavy shape and perfect for wine, juice and water Named for the ease with which it allows you to swirl your wine, this collection offers a rippled shape with subtle grooves that help guide the wine around and around the vessel All RIEDEL glasses are dishwasher safe Glass capacity is 20.46 ounces; glass size is 3.58Lx3.58Wx4.72H(Inches)