Slits (36) are formed on a wall part (28) of a clip (16), and a locking piece (34) is made elastically deformable. Only the locking piece (34) is elastically deformed outward when a suspender (22) is locked in the locking piece (34). The locking piece (34) is restored when an upper face (22A) of the suspender (22) passes a top part of a locking claw (38) of the locking piece (34). The suspender (22) is thus prevented from coming out, and the suspender (22) is locked in the clip (16).