Advanced Back Massage Features Massage Therapist-Like Touch. The 4-roller system of the Massage Pro A4000 provides a firm massage with enough "give" to make it feel like the touch of a real and experienced massage therapist. Kneading. The kneading function feels like the hands of a real massage therapist. The realistic kneading massage can push in from the outer edges of the back toward the spine, or you can adjust the kneading massage to work the opposite direction, from the spine to the outer back muscles. Three different speed/intensity adjustments are offered. Tapping. On the low speed/intensity adjustment, the tapping massage feels like a massage therapist pressing into the pressure points on the back, and then releasing to relieve pressure and pain, much like a shiatsu massage. On the fastest setting, the realistic massage rollers work vigorously and quickly on the back, to the point that it feels much like an ultra-intense vibration massage. The medium setting achieves a balance between these two extremes. The width adjustments allows you to work the percussion on just the right area on your shoulder, back or waist. Air Massage - Seat Multiple air bags inside the seat cushion inflate and deflate in intervals to simulate the pressing (shiatsu massage) and rolling on the legs and hips/thighs performed by a massage therapist. The intensity of the seat air massage can be adjusted, along with the rhythm by which the air presses and rolls into the legs/hips/thighs.