A toothbrush comprising: a handle: a head connected to the handle, the head having a proximal periphery, a distal periphery, a first surface and a longitudinal axis; a first set of cleaning elements forming a loop that extends from the distal periphery of the head to the proximal periphery of the head, the first set of cleaning elements comprising: a first par-elliptical wall of cleaning elements located at the distal periphery of the head, the first par-elliptical wall terminating in a first end (241 a) and a second end; a second par-elliptical wall of cleaning elements located at the proximal periphery of the head, the second par-elliptical wall terminating in a first end and a second end; a first row of cleaning elements extending from the first end of the first par-elliptical wall to the first end of the second par-elliptical wall; and a second row of cleaning elements extending from the second end (241 b) of the first par-elliptical wall to the second end of the second par-elliptical wall; characterised in that a top surface of the loop has a longitudinal side profile that is a stretched-out S-shape; and in that the first and second rows (142, 143) are first and second arcuate rows (142, 143) symmetrically arranged about the longitudinal axis and a lateral axis of the head, the first and second arcuate rows (142, 143) separated by a first distance that increases with distance from the lateral axis. a handle: a head connected to the handle, the head having a proximal periphery, a distal periphery, a first surface and a longitudinal axis; a first set of cleaning elements forming a loop that extends from the distal periphery of the head to the proximal periphery of the head, the first set of cleaning elements comprising: a first par-elliptical wall of cleaning elements located at the distal periphery of the head, the first par-elliptical wall terminating in a first end (241 a) and a second end; a second par-elliptical wall of cleaning elements located at the proximal periphery of the head, the second par-elliptical wall terminating in a first end and a second end; a first row of cleaning elements extending from the first end of the first par-elliptical wall to the first end of the second par-elliptical wall; and a second row of cleaning elements extending from the second end (241 b) of the first par-elliptical wall to the second end of the second par-elliptical wall; characterised in that a top surface of the loop has a longitudinal side profile that is a stretched-out S-shape; and in that the first and second rows (142, 143) are first and second arcuate rows (142, 143) symmetrically arranged about the longitudinal axis and a lateral axis of the head, the first and second arcuate rows (142, 143) separated by a first distance that increases with distance from the lateral axis. a head connected to the handle, the head having a proximal periphery, a distal periphery, a first surface and a longitudinal axis; a first set of cleaning elements forming a loop that extends from the distal periphery of the head to the proximal periphery of the head, the first set of cleaning elements comprising: a first par-elliptical wall of cleaning elements located at the distal periphery of the head, the first par-elliptical wall terminating in a first end (241 a) and a second end; a second par-elliptical wall of cleaning elements located at the proximal periphery of the head, the second par-elliptical wall terminating in a first end and a second end; a first row of cleaning elements extending from the first end of the first par-elliptical wall to the first end of the second par-elliptical wall; and a second row of cleaning elements extending from the second end (241 b) of the first par-elliptical wall to the second end of the second par-elliptical wall; a first par-elliptical wall of cleaning elements located at the distal periphery of the head, the first par-elliptical wall terminating in a first end (241 a) and a second end; a second par-elliptical wall of cleaning elements located at the proximal periphery of the head, the second par-elliptical wall terminating in a first end and a second end; a first row of cleaning elements extending from the first end of the first par-elliptical wall to the first end of the second par-elliptical wall; and a second row of cleaning elements extending from the second end (241 b) of the first par-elliptical wall to the second end of the second par-elliptical wall; characterised in that a top surface of the loop has a longitudinal side profile that is a stretched-out S-shape; and in that the first and second rows (142, 143) are first and second arcuate rows (142, 143) symmetrically arranged about the longitudinal axis and a lateral axis of the head, the first and second arcuate rows (142, 143) separated by a first distance that increases with distance from the lateral axis.