With the Sigg Meridian Sumatra vacuum flask, drinks stay hot for up to 13 hours and cold for 24 hours. The double-walled, vacuum-insulated and copper-coated bottle is ideal for the office, sports or travelling and makes a great gift for any occasion. The stylish design of the drinking bottle reflects the beauty of the Sumatran tropical forest and is the ideal alternative to disposable bottles. Thanks to the pleasantly rounded bottle opening and the bottle neck with the ideal diameter, a premium drinking experience is guaranteed. Developed in cooperation with One Tree Planted, one tree is planted for every bottle sold, meaning that every bottle articles in the reforestation of the rainforest. In addition to the high-quality design made of lacquered stainless steel, the stylish lid with bamboo applications stands out - for trendy and plastic-free drinking pleasure. The water bottle is made of food-safe 18/8 stainless steel, making the bottle unbreakable and timelessly elegant. The Thermo drinking bottle does not contain any harmful substances - including phthalates or oestrogen-active substances.