Kazan / volcano / coffee tumbler

A reheatable tumbler with refillable flameless ration heater tablets. Its unique hexagon shape is an interactive design for users to align the corners when heating tablets (total of 6) are in use. As the chemical reaction takes place and the liquid gets heated, a warm LED light glows mimicking volcano by thermocouple indicating the heat of the drink inside. A user friendly interaction design to intuitively let users know if their drink inside is hot or cold.