| abstract |
(57) Abstract: In a sealed bag, (A) a heating agent which generates heat by reacting with water, (B) water and / or a hydrated salt, (C) an acid and (D) a carbonate. A warm bag that is sealed so that these components do not react, and expands when used by mixing components (A) to (D) in the bag. [Effect] Since a carbon dioxide gas is generated and swells at the same time as the heating action, it is suitable for fixing to a portable water pillow, a cushion or a part of a body to improve fatigue and swelling. |