With its O collection, Riedel brings modern functionality to the age-old pleasures of wine. O glasses create a lovely rounded silhouette that cradles pleasantly in the hand with the additional benefit of stemlessness. Cabernet/Merlot glasses measuring 4-7/8 inches tall and holding 21-1/8 ounces each. Crafted from lead-free glass for clarity and consistency . Innovative stemless shape offers comfort and convenience. Dishwasher-safe design ensures easy cleaning.