Whether it's a latte in a double wall mug or a beer in a double wall pilsner glass, serve your beverage of choice in this elegant glassware. Duetto will keep your beverage's temperature longer: hot drinks stay hot without burning fingers and cold drinks stay cold without messy condensation. No need for a coaster! This glassware is made of mouth-blown borosilicate that is resistant to thermal shock. Don't be afraid to show off: delicious drinks are worth sparkling clear glassware!