Packs to be warmed or cooled for first aid purposes, namely, medical ice packs and heating pads; headbands containing a substance to cool or warm the wearer for first aid purposes, namely, therapeutic devices using heat and cold to provide relief from ear pain; headwear to retain a heating or cooling insert for first aid purposes, namely, therapeutic devices using heat and cold to provide relief from ear pain; Packs to be warmed or cooled for changing a temperature of the body for first aid p...