A technology that, even in the case where a sheet member employed as an exterior member has low flexibility, is able to make a portion where the sheet member is wrapped around an electrical wire easily bendable. The electrical wire includes a bending part arranged in a bent state. The exterior member includes a sheet main body part wrapped around a portion of the electrical wire that includes the bending part. A slit is formed in a portion of the main body part that is wrapped around the bending part, in a direction including a direction in which a wrapping start portion and a wrapping end portion of the main body part are joined together.