Insulation function. The robust thermal carafe from Rotpunkt impresses with its stylish design and exudes timelessness. This high-quality thermal carafe keeps coffee, tea, juice, or iced tea pleasantly cool or warm for a long time. The mouth-blown glass vessel is made from double-walled insulating rosaling glass. This design allows for optimal and long-lasting insulation through a vacuum and a special silver coating between the two glass vessels. When filled, the carafe achieves a heat retention time of approximately 24 hours and a cold retention time of up to 36 hours. High-quality sealing rings and the reliable screw cap ensure long-lasting and dependable use.