Splendid! It is what I have expected chair. It function properly upon a simple set up and tubes/wires connections. One concern: back air tube colored black while instruction book shown color is yellow. This might cause confusion as one may looking for a yellow tube for lasting time prior to realizing this alternation.  Two foot wheels had been pre assembled but instructions still shows how to assemble. This is also need to be notified. It is good product and its value shall be promoted without in jeopardized with these minor drawbacks,