These two Double Rocks glasses from the 'Drink Specific Glassware' collection were designed in collaboration with spirits expert Zane Harris. The Double Rocks glass asserts itself as an indispensable cocktail glass in bars. With a high rim for larger drinks with an extra elaborate cocktail decoration, the tumbler is a go-to choice among bartenders. The sophisticated design of vertical grooves that merge into the glass base is an eye-catcher on the table and on the counter and is particularly effective when the glass is filled with ice cubes. There is also a subtle Riedel emblem hidden in the bottom ice of the glass. The characteristics of a Rocks glass are retained, which is why this tumbler can also be used authentically for Old Fashioned and Whiskey on the Rocks. The machine-made crystal glass is dishwasher safe.