I am back pain patient for about 7 years. Of course, my office job is therefore not the best for my back. While a stronger back pain phase, I wanted to look again besides the usual painkillers, if it is not there something I have not yet tasted and tadaaaa: here it is! Of course it is for the colleagues once funny, if you come with 23 with a booster cushion to the office, but now is all my colleagues have gained one and are satisfied. The seat cushion means that the spine is constantly in motion, my tension pain are thus declined significantly. Of course you can not expect that you will consistently painless as back pain patient, but at least you hereby reduces the "office work" factor from. The build quality is excellent, reliable delivery. The price-performance ratio of this product is right and for anyone who wants to do his back something good, a great purchase!