Heating element: Composite fiber wire Temperature and switch controller: On/Off; Hi-Lo; estimated temperature control; 5 steps temp control; customized controller Cigarette lighter plug Size: 25.4*20.3CM/ 23cm*45cm/ customized We can make a 2 seats kit or 1 seat kit (2 layers per seat) Voltage: DC12V Products is washable, wire doesn't break! The heating wire is patented by the company and is the best solution at the current market of electric heating products. Washable, doesn't break or stretch. Quality certificates: ISO 9001, PICC, CE, RoHS, E-Mark Our basic shipment terms are FOB Shanghai