A Great Help Center.
Yes, if you feel cold or sour, anywhere you want .
Yes, it is designed with medical grade silicone case.
Of course not , it uses a microprocessor to monitor the temperature change in real time, which can maintain a constant temperature, no need to worry about burns caused by excessive temperature.
It is waterproof , can be washed by water if necessary.
It can be used continuously for at least 10 hours