... ), polyster(back)stuffing:memory foam* 5 built-in virbating motors massage 4 tagert position of neck, shoulder, back and thighs *1 ... pc heater pad relax back and lumber *3 massage mode: pulsating, tapping, kneading and rolling*includes 1 smart hand ... controller with 8 buttons,4 for massage positon adjustment ,1 for mode,1 for speed choice of ...