There's nothing worse than expecting a hot drink but finding it has gone cold, so keep your drinks toasty with the Koolatron 12 Volt 1 Liter Stainless Steel Flask. This flask plugs into a 12 volt power outlet, like your vehicle's cigarette lighter outlet. It features a double-wall vacuum insulation to keep your coffee, hot chocolate, soup, and more piping hot for hours. The lid can even be used as an insulated serving cup.Always have a hot beverage waiting for you at sporting events, at worksite, or on long road trips with the Koolatron 12 Volt 1 Liter Flask.