heating temperature The temperature can be raised from 58°C to 72°C in about 3 minutes. The liquid will be noticeably heated after 15-20 minutes The actual heating effect will be related to the body temperature and the thermal conductivity of the bottle used. Cooling temperature The product temperature can be reduced to zero degrees Celsius. The liquid will be noticeably cooled after 15-20 minutes The actual cooling effect will be related to the air temperature, body temperature and the thermal conductivity of the bottle used Made of environmentally friendly plastic and aluminum