| CPC H01B 7/0045 (2013.01) [H02G 3/0468 (2013.01); B60R 16/0207 (2013.01)] | 7 Claims |

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