You cannot necessarily keep the appliance in a backpack while heating, especially if you are careful that there are no splashes of water or other obstacles that could affect its function. It is advisable to place the appliance during the heating phase so that it is well ventilated to ensure safe and efficient heating.
However, some users have reported that they have left the HeatsBox in a carry bag during the heating phase to protect it from water splashes and that this has worked without any problems as long as the bag was not too tight or airtight. However, it is always advisable to follow the manufacturer's instructions and use the device in a well-ventilated environment.
