Nice lumbar support for my car seat!
My car did not come with built in lumbar support.  So I ordered this item, opened the back of my driver's seat, inserted this lumbar support and left the tube and bulb hanging out toward's the right side of my driver seat.  It works great!  I now have adjustable lumbar support for my aching back.  Nice product!  You will need to consult an owner's manual to figure out how to get into your seat back.  And please be careful...as modern cars like mine have wires in the seat for air bags, seat belts and seat warmers and you don't want to damage or pinch those.
Rating: 5 stars