This unique pair of whiskey glasses features the Grand Canyon running along the inside of the glasses. Store these glasses in the freezer, pour your liquor and the design of the rocks and stones of the canyons chill and aerate in just 18 seconds to enhance your whiskey-tasting experience without ice. No more cumbersome whiskey stones or messy oversized ice cubes. These whiskey glasses have a heavy base and are made of premium lead-free crystalline glass ensuring exceptional clarity and brilliance. The glasses are dishwasher safe, however, the manufacturer recommends hand washing them with mild detergent and warm water to preserve the longevity and shine of the glasses. Gently dry them with a soft cloth to avoid water spots. 10 oz