A belt of the present invention includes a belt main body (10) that extends in the form of a long. narrow band. A frame-shaped body (13) is attached to a first belt portion (11) corresponding to a side on an end in a lengthwise direction (Y) of the belt main body (10). Multiple through-holes (21, 22 21, 22 . . . ) are formed in alignment in the lengthwise direction (Y) in the second belt portion (12) corresponding to a side opposite to the first belt portion (11) in the lengthwise direction (Y) of the belt main body (10). A locking member (14) is included which is to be attached to a through-hole (21, 22) of the second belt portion (12) so as to protrude from a front surface (12a) of the second belt portion (12). In a state in which the belt main body (10) is mounted on the target object, the second belt portion (12) is passed through the frame-shaped body (13), and the side (33) of the frame-shaped body (13) locks the locking member (14) so as to prevent the second belt portion (12) from coming out of the frame-shaped body (13).