High grade polycarbonate makes Tervis the strongest, most durable drinkware available today

Polycarbonate is not only durable but also crystal clear; no clear drinkware looks or wears better

Air space - Tervis Tumblers take advantage of the insulating properties of air to keep your drinks at just the right temperature

Doublewall insulation keeps hot drinks hot and cold drinks cold Inner and outer polycarbonate walls of the tumblers are bonded together with an ultra-strong ultra-sonic seal, so they stand up to the microwave, the freezer, and the dishwasher (and the occasional fumble) for a lifetime

Made in USA