The heating and cooling means features an array of non communicating chambers enclosing packets containing a thermoresponsive mixture while the protective and insulative means features a layer of resilient material and {HEAD ~ a layer} of {TAIL ~ fabric} backed covering material 
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The heating and cooling means features an array of non communicating chambers enclosing packets containing a thermoresponsive mixture while the protective and insulative means features a layer of resilient material and { HEAD ~ a layer } of { TAIL ~ fabric } backed covering material
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH