After a "no name" Seat heating stopped working after a few weeks, I have decided to improve the well-known manufacturer WAECO. This has been tested by various car magazines and other buyers as well. As always, Amazon has delivered quickly (thanks to the fixed contract workers ... * g *). "Installation" in the car is a breeze and done in a few minutes. Instead of just a couple of rubber bands, there are solid-looking belts with which the pad is firmly secured to the seat. Everything is robust and stable. Even a small bag for the connector including cable sewn in so that nothing rumfliegt in storage in the area. The "patent plugs" fit with my Sorento problems in the power socket and locked therein. Angemacht * click * and expects the heat to the Po and waiting and waiting .... So I must say that no name Seat heating was significantly faster warming up. Perhaps that is why even faster broken ... For stability of WAECO I can not say anything yet. So far, it works .... But, like others already write: This orthopedic Knubbel the back cushion is really inconvenient times! Luckily, you can adjust the lumbar support in my car. If I take this all the way back, then you go. Otherwise you have to try it for yourself.