This Fissman double wall vacuum bottle can be used with hot or cold liquids and keep temperature up for many hours. Fragrant tea or herbal infusion will keep you warm on a walk and will delight you with a deep rich taste. Don't be afraid of dropping your bottle which can happen on the go, the metal body of Fissman vacuum bottle can withstand high impact. In addition, this stable material keeps the heat much better and maintains a constant temperature of the drinks.