Thermos vacuum insulation locks in temperature to preserve flavor and freshness. Unbreakable 18/8 stainless steel interior and exterior withstand the demands of everyday use. Convenient twist and pour stopper makes serving simple. Built-in stainless steel cup lets you enjoy your beverage anywhere. Light and compact design for effortless transport and storage. Bottle stays cool to the touch with hot liquids and is condensation-free with cold. 8 hour + keeps hot 24 hour + keeps cold size :- 1.8 liter 5 YEAR WARRANTY