ONLY Vibration Massage, This Comfier gray back massager with heat is only a Vibration massager, it’s not a shiatsu massager so you will feel a massage that is lighter than the shiatsu one. Do NOT buy this massage seat cushion if you are looking for a shiatsu pad with kneading nodes. Vibration Massage for Relaxing, The massage pad is equipped with 10 vibration motors and heat function, can provide soothing gentle massage for back, thighs to help relieve stress, tension and muscle pain. It’s a great chair massager for recliner and office chairs. 5 Vibration Modes Available, The massage pads for chairs allow you to choose different massage areas including neck, upper back, lower back, seat or combines all of these areas together. The massage seat has 5 programmed vibration modes and 3 variable massage intensities to give you the best massage you can customize. Optional Heating, The chair massager with heat has 3 heating pads for full back and seat area, providing heat therapeutic for back, hips and thighs. The back heater and seat heater can work separately. 2 heating levels are available, it can reach 114℉ at low level and 131℉ at high level. It is a nice seat warmer in the cold winter. Safe & Reliable, The back massager pad is equipped with overheat protection thermostat controller that is UL listed, rigorously tested for quality control and safety. Each heating pad with auto shut off feature ensures safe use. The timer is 30 mins to automatically switch off. For any reason, if you are not 100% satisfied with this massage cushion, just return it within 30 days.