An insert comprising: (i) a forward layer for facing a passenger; (ii) a rearward layer opposite the forward layer; and (iii) a spacer material located between the forward layer and the rearward layer creating an open space within the insert; (iv) an edge sealed substantially around a periphery of the insert; (v) a heater comprising; (a) polymer film having one or more openings for allowing air flow therethrough, (b) a resistive layer, (c) two or more buss bars that are spaced apart and electrically in communication with each other through the resistive layer; and (d) a protective layer; (vi) one or more air movers in fluid communication with the open space within the insert; (vii) a housing having a flange that attaches the one or more air movers to the insert, by the flange being fitted between the spacer material and the rearward layer; wherein the heater layer is attached to one or a combination of the forward layer, the rearward layer, or the spacer material; wherein the forward layer, the rearward layer, or both include one or more openings in fluid communication with the open space within the insert.