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.