Previously had a cushion where the cigarette plug was a bit spielig. One should pull the plug out of the socket of the cigarette lighter always after parking the vehicle. Why because a switch is integrated, nagut for hot and not so hot. But in order to do so öffter this, you can sometimes "pull defective" the plug over time. This cushion has a plug (I would say grid plug) the right click when you poke and will not loosen while driving the same. But also has the disadvantage, if you want to pull the plug again, you just have to hold the socket in order not rauszureißen irgentwann. The heating quality is perfect, is very fast.