Abstract: The invention provides a life-saving device including means for allowing the wearer to be found easily, and a body temperature adjuster for maintaining the body temperature of the wearer at a proper body temperature by fine-adjusting the body temperature of the wearer depending on the outside temperature or the body temperature until the wearer is rescued.

Abstract: To provide a body temperature adjuster which is easy to wear, comfortable to wear, and provides safe and effective adjustment of the body temperature. A length adjustable band member, the band member including a plurality of first storages and a plurality of second storages for storing temperature-adjusting members for adjusting the body temperature are provided, and when the wearer puts on the band member, the first storages are disposed at the positions contacting the armpits where axillary arteries run through, and the second storages are disposed at the positions contacting both sides of the neck where common carotid arteries run through.

Abstract: The invention provides a life-saving device including means for allowing the wearer to be found easily, and a body temperature adjuster for maintaining the body temperature of the wearer at a proper body temperature by fine-adjusting the body temperature of the wearer depending on the outside temperature or the body temperature until the wearer is rescued.