Oregon Scientific WS912 i.Comfort 3D Massage Seat with Heat for $49.99.  Shipping is $5.00 for a total of $54.99 shipped.  Here is a screenshot for your reference. The 3D movement of two shiatsu massage heads adjust automatically to the individual contours of the back, heated massage heads with light indicator, detachable seat cushion, 2 programmed massaging modes with 2 level intensity control, and 10 or 20 minute timer function.