The functions of Emergency have been scaled up so that it can be used by two people. Not only can it be used for emergency, but its large size allows it to be used for a variety of purposes, such as as an insulating trunk for the floor of a mountain tent or as an emergency shelter. It is also effective in raising the body temperature of a person who is unable to move due to hypothermia. In addition, the draw cord of the storage case can be used as a tinder cord to start a fire in an emergency, and a whistle is also included.
