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SOS isothermal foil is an essential part of every expedition into nature.
The basic function is to prevent heat loss caused by the evaporation of water from the body surface. To ensure maximum effect, the person must be wrapped neatly wrapped all around without any vents.
If a person is suffering from hypothermia one should be dressed, covered, insulated, and, finally, wrapped in foil.
Cylinder shape ensures coverage, that provides the escape of heat. Like a sleeping bag, it is also suitable for lying down.
