PURPOSE:To enable to facilitate a work to seal regenerative agent into regenerative bodies without losing shape-keeping ability of regenerative bodies, by discontinuing part of sheets positioned between the neighboring housing parts for the sheets, in order to provide a passage which connects the neighboring housing parts to each other in the middle of the housing parts in the longitudinal direction. CONSTITUTION:A regenerative body 2 is constituted by connecting baggy bodies 2A consisting of filmy sheets made of material such as nylon, and liquid regenerative agent, of which main content is calcium chloride, with a crystallization promotor being mixed in it, solidifying by radiating heat, is sealed in the baggy bodies 2A. The upper and the lower ends of neighboring bag-forming sheets 2a, 2a are connected to each other in a baggy body 2A, in order to partition off the sheets into four sideways long housing parts 10 for regenerative agent in the longitudinal direction. At the same time, part of sheets 2a, 2a between neighboring housing parts are discontinued, in order to form a passage 11 to connect the neighboring housing parts to each other in the middle of housing parts 10 in the longitudinal direction.
