Double-walled tea bottle made of borosilicate glass on the go. Boiling water is poured into the lower, large glass. In the upper, small glass there is space for any kind of loose tea. To do this, simply turn the bottle upside down - let the tea infuse as long as necessary and then turn it over again - through the sieve in the middle part, the tea can now be enjoyed after unscrewing the thread without annoying suspended matter - anywhere and at any time!