Wacaco Nanovessel Vacuum-Insulated Flask is a tumbler, tea infuser, and water bottle in one

With a 210-milliliter capacity, the Wacaco Nanovessel Vacuum-Insulated Flask gives you more than most bottles do. In fact, this container is a tumbler, tea infuser, and water bottle all in one. This three-in-one product is essential for backpacking trips and days at the office alike. Made of stainless steel 304, this is the way to keep hot drinks hot and cold drinks cold for hours on end. Plus, the Nanovessel makes it easy to infuse tea thanks to the built-in..