SHIATSU BACK MASSAGER-The massage cushion has 4 rolling massage heads that travel up and down your full back and shoulder while tilting left and right to increase their coverage area. 3 MASSAGE ZONES for your choices: Neck, Back,Neck and Back. SPOT MASSAGE: Allows you to concentrate the kneading on one area for pin-point relaxationFLEXIBLE MASSAGE MECHANISM: This Chair Massager built in flexible massage Mechanism can be better fit the curves of the body. The 4 flexible massage rollers works along the contours of your body to provide a precise and human-like massage on your neck ,shoulder and back area.Rolling nodes with heat: 4 shiatsu nodes with rolling function to give gentle smoothly touch, reform the ordinary shiatsu heads hard, stiff characteristics. With additional heating therapy on the rolling nodes helps to relax muscles tension and soothe fatigue.Intensity control flap: The shiatsu massager is equipped with a removeable & washable flap and pillow,lets you choose a softer or more intense massage.(Note: you may place a blanket or towel between you and the massager to get a far softer massage, when you still feel too strong intensity after adding the flap.)Seat Vibration massage -Seat vibration with 3 adjustable levels of intensity, provides you a comfortable massage to Hip and thighs. (Note: On the seat there is only vibration massage without heat)