MUST HAVE among thermoses larger than 1 liter. It will work well at work outside, during family trips outside the city, as well as lonely hiking in the mountains. Despite its dimensions, it is very handy. New, improved design! By reducing the vacuum between the steel walls, it was possible to obtain a greater capacity, with the same size of the thermos. Such a construction, i.e. reduced vacuum insulation and a larger interior, strengthened the impact resistance. The thermos has a new structurally rebuilt, flow plug, which means that you do not have to unscrew it completely, just slightly unscrew and tilt the thermos to fill the cup. This solution protects the drink against unnecessary cooling and accidental loss of the stopper. The thermos is 100% hermetic. The folded handle with a comfortable silicone finish provides a stable, secure grip when carrying and pouring. The thermos cap also acts as a cup, its double walls do not heat up, ensuring comfort of use. The vacuum insulation applied between 2 steel walls allows you to keep the temperature of the hot drink for 40 hours, cold for 35 hours, and the ice for up to 6 days. The wide inlet facilitates pouring , and allows you to thoroughly clean the interior. Made of extremely durable 18/8 stainless steel, naturally BPA-free. Dishwasher safe. Temperature maintenance parameters are for a full vessel, not opened for a specified period of time. Opening the vessel and partially draining the vessel will lose its initial temperature more quickly. To extend the temperature retention time, it is recommended to first fill the vessel with hot water and leave it tightly closed for five minutes, then empty it, fill it with the desired drink or food and seal it tightly. If the product is to be stored cold or cool, use cold water.