Evo-Dewar Vacuum Flask

Pay tribute to Sir James Dewar for his invention of the Dewar flask, a revolutionary idea streamlines the use of the vacuum flask to a simple pick-up-and-pour solution, by using a special design pouring system allow automatically opening and closing the spout! Open the lid to pour in the hot or cold liquid and replaced it, there is no further need to push a button, or screw open a cap. The drip-free spout opens automatically when the flask is tilted and closes again when it is placed upright, insulating the liquid inside for as long as possible. It has passed the European Standard EN12546-1 Thermo Test with insulation function over 24 hours.