ProtoArc Lumbar Support Cushion – Memory Foam Back Support Cushion with Ergonomic Butterfly Design – Back Support for Office Chair, Car Seat, Double Adjustable Straps and Breathable Mesh Cover – Black

: Featuring a thick bottom, thin top structure, more ergonomic. Memory foam is infused with charcoal for better breathability. Double adjustable shoulder straps are more stable than single shoulder straps
: The curved design conforms to the natural contour of your lower back. Provide optimal comfort when working or driving while sitting for long periods of time
: Never flatte