Exterior member, wire harness, and manufacturing method of exterior member

A manufacturing method of an exterior member which has a tubular shape so as to accommodate and protect one conduction path or a plurality of conduction paths and includes a resin portion in which a flexible tube portion having flexibility and a straight tube portion so as to linearly route the conduction path are continuously formed, the method comprising:

• forming a spiral projection portion in which a first projection that has a projecting shape as seen from a tube outer surface side spirally extends in a circumferential direction of the tube outer surface as the flexible tube portion;
• and
• forming a straight projection portion in which a second projection that has a projecting shape as seen from the tube outer surface side continuously extends from an end portion of the spiral projection portion and extends in a tube axis direction as the straight tube portion,
• wherein an outer diameter of the first projection of the spiral projection portion is equal to an outer diameter of the second projection of the straight projection portion, and an outer diameter of a recess adjoining to the first projection is equal to an outer diameter of a recess adjoining to the second projection.