With the Sigg Meridian Sumatra insulated bottle, beverages stay hot for up to 13 hours and cold for 24 hours. The double-walled, vacuum-insulated, and copper-coated bottle is perfect for the office, sports, or travel, and makes a lovely gift for any occasion. The stylishly designed water bottle reflects the beauty of the tropical rainforest of Sumatra and is the ideal alternative to single-use bottles. Thanks to the pleasantly rounded bottle opening and the neck with the perfect diameter, a premium drinking experience is guaranteed. Developed in cooperation with One Tree Planted, a tree is planted for every bottle sold, so each bottle contributes to reforestation efforts in the rainforest. In addition to the high-quality design made of painted stainless steel, the stylish cap features bamboo applications for trendy and plastic-free drinking enjoyment. The water bottle is made of food-grade 18/8 stainless steel, making it shatterproof and timelessly elegant. The thermo drinking bottle contains no harmful substances, including phthalates or estrogen-active substances.