A fixing tool is disclosed, which can help reduce a possibility that heat may be transferred to a user when a state is changed in a material of a member for fixing a predetermined site of a human body. The fixing tool has a deformation portion that is configured to be deformable, that at least partially covers an outer periphery of any site of a limb, a trunk, a neck, and a head, and that is deformed to align with the site through the deformation, and a heat insulating material that is disposed in a portion corresponding to at least the site on an outside surface of the deformation portion.
