EXTERIOR MATERIAL, EXTERIOR MATERIAL CONNECTING BODY, WIRE HARNESS, AND METHOD OF MANUFACTURING WIRE HARNESS

An exterior material includes a bellows part that includes ridge parts annularly formed around a center axis along an axial direction and project toward one side in a radial direction intersecting the axial direction, and groove parts annularly formed around the center axis and are recessed toward another side in the radial direction, the ridge parts and the groove parts being alternately aligned along the axial direction, the bellows part being externally attached to a wiring material. The bellows part includes a first uneven region that has one first groove part and two first ridge parts, and a second uneven region that has one second groove part having an outer diameter relatively shorter than an inner diameter of the first groove part, and two second ridge parts having an outer diameter relatively shorter than an inner diameter of the first ridge part.