Ozeri Moderna Artisan Series Double Wall Beverage and Espresso Shot Glasses, 2-Ounce, Set of 2 Set of 2 heat and condensation-resistant borosilicate glasses that each holds 2 oz Stronger and more durable than common glass, each glass features opposing mouth-blown dimples that allow for a natural and effortless grip Patented double wall design that suspends drinks within an inner wall, creating an engaging optical effect Designed to keep your hands cool with hot espressos, and free of condensation with chilled shot beverages Completely microwave and freezer safe. Ships in an elegant color printed box with a No-Hassle Warranty. Satisfaction Guaranteed