Elevate your hydration with 1900ml MAUNA, our largest, double-walled, vacuum insulated stainless steel water bottle. Designed to keep your beverage at it's ideal temperatures for hours, our advanced vacuum insulation technology ensures that your cold drinks stay icy for up to 18 hours, while hot beverages remain steaming for up to 6 hours. Say goodbye to lukewarm sips and hello to the perfect drink, every time! The unique design features infuser filter, allowing you to supercharge your water with any flavour you like. And if drinking through straw is your thing, each bottle comes with a retractable straw system.