It's a beautiful thing when form, function and durability come together in a kitchenware product you will be proud to own. Expect nothing less. These modern and elegant double-walled coffee and tea mugs offer both utility and aesthetic pleasure. So enjoy your favorite beverages as hot or cold as you like while drinking in the pleasing optical illusion of the liquids floating in air in your cup. Hold them without the handle, they will stay room temperature to the touch. And there is little to no condensation on the exterior of the mugs, so you won't have to worry about mess or damage to tabletops. Made of tough, hand-blown borosilicate glass, these attractive vessels are made virtually without defects, unlike many imitators. So don't settle for ordinary mugs, dazzle your friends with these beautiful coffee and tea mugs. • Made with borosilicate glass to have more resistance to thermal shock than common glass. • Double walled designed enable the insulate effect that keep your beverage at the ideal temperature. • Mug capacity is 12 fl. oz. or 350ml