Self-heating vacuum flask means piping hot coffee all day long: Enjoy a hot cup of coffee or a cold drink any time of day with the 1L insulated vacuum flask from Koolatron. Not only does double-walled vacuum insulation keep your drinks at their ideal temperature for longer, but this high-tech portable Thermos also has a built-in heater to ensure your coffee, tea, or soup stays piping hot for as long as you want. Plug the 6 ft (1.8 m) power cord into your vehicle's 12V receptacle to use in heating mode and take your lunches and coffee breaks to a whole new level. Leakproof thermal flask with tons of features: This 1 L capacity silver and black travel thermos is made of premium materials, including double-walled stainless steel, black ABS accents, a cool-touch flexible handle, a leakproof rubber gasket, and adjustable canvas webbing carry strap. A convenient push-and-pour stopper lets you dispense your beverage without any temperature loss and a leakproof seal means no worrying about spills in your car or lunch bag. With the generous 1 L capacity and an insulated lid that doubles as a serving cup, you can always have a hot drink or meal waiting for you at sporting events, on a worksite, or long road trips.