plurality of cold packs or heating pads can be accommodated in cutouts positioned near the periphery of the pad to affect the air temperature as it is drawn into the pad towards the fan 27 an alternate preferred embodiment for an upper layer 11 of a multi layered support pad shown in fig1 is illustrated in fig6 this pad besides having great utility as an upper layer of a multi layered pad as shown in fig1 also finds considerable utility and has great advantage over the prior art as a single layer pad the foam pad of fig6 may have a foam body 11 made out of a variety of materials including a foam material sold as insulite by uniroyal or any other open or closed cell foam material which has a somewhat denser consistency the foam pad of fig6 is shown as having a plurality of hills 17 with valleys 19 therebetween each of the valleys as illustrated has an air channel 23 extending from the bottom of the valley through the body of the foam pad to the bottom face or second major side 51 the first major side on the top face of the foam pad of fig6 is the tops of the hills 21 some of the hills 17 are shown as having an air channel core 49 extending from the second major side 51 to the first major side of the foam pad referring now to fig7 which illustrates a.