Self Inflatable Air Lumbar Rest China Patented This newly designed cushion is excellent for Lumbar Rest during driving.The Lumbar Rest is an exceptional advance in the comfort and support of the lower back.With self-inflation technology,this comforter custom fits and conforms to practically every lumbar shape.It is very durable anc compact and can be easily carried without difficulty for use in many locations.Multiple applications include a wheelchair rest,and office chair lumbar support,a car seat back rest,etc.