Insulating Flask Harmonic 1LWhether in summer or winter, the insulating flask Harmonic dark blue with 1 l capacity is a practical helper and wins over with an optimal insulating performance: The double walled glass flask located inside the jug keeps drinks warm for up to 24 hours and cold for up to 36 hours. In the middle of the lid is a modern aroma pressurised cap that is easy to open and close: Simply press the push button down and the jug stays open and tea or coffee can be