Abstract: A holder for a disposable pocket warmer of chemical or oxidation exothermic type is adapted to be inserted into shoes. The holder containing the pocket warmer is made small so as to be situated only in the toe and the broadest portion of the interior of the shoe. The holder does not extend to the heel of the shoe, so that only a few different sizes of holders can be used for a wide range of shoe sizes. The holder comprises a lower base member and an upper closure or cover member bonded to each other to form a pocket to receive the warmer. Each respective member has a different permeability, so that the holder may be turned upside down or reversed, to thereby change the permeability of a member exposed to air within the shoe interior. As a result, the heating value from the pocket warmer can be changed according to environment.

Abstract: A disposable body warmer comprising a flat bag and in a flat form having a thickness of 2 to 5 mm, comprising a heat generating agent comprising iron powder as a main ingredient and mixed therewith 9 to 11% by weight of a water-retaining agent, 18 to 22% by weight of water, an oxidation promotor and sodium chloride. The flat bag is provided with an air-permeable surface having an air permeability per unit of 5,000 to 10,000 sec/100 cc so as to bring about a reduction in the pressure accompanying oxidative heat generation of the heat generating agent packed in the flat bag. The other surface of the flat bag is provided with a nontransferable self-adhesive layer.