Had you suffered no water to make tea when outside?
Our following tea vacuum flask can solve the problem.
With infuser and one key outlet leaves box, it can store and isolate the tea leaves well.
Pour hot water into the vacuum flask, anytime when need to drink tea, press the leaves box button,
turn the flask down, let hot water go through the leaves box, then turn it upside down, tea is ready without leaves.
If you do not want to drink at once, it can keep warm for you.