The Moto-Massage is a jet that automatically travels up and down to massage a person's back. The mixing of air and water in a jet along with a playable spine causes the sweeping motion of the Moto-Massage. The intensity and speed of the Moto-Massage can be adjusted with the air control valve. The Moto-Massage is curved to fit the curvature of the back. The Moto-Massage consists of a jet nozzle, water tube, threaded fitting, and vertebrae. The Moto-Massage is held in-place by a special recess behind the spa shell. A shim is used to assist in proper movement of the Moto-Massage.