Patent ID: 6973742

Claim:
A thermal foot cover for receiving a wearer's shoe-encased or boot-encased foot or a wearer's foot comprising an upper cover portion having an ankle opening therethrough and a bottom panel attached to said upper cover portion to define a cavity for receiving the wearer's shoe-encased or boot-encased foot or wearer's foot, at least a portion of said upper cover portion having an outer covering, an inner covering and a radiant barrier sandwiched between said outer covering and said inner covering, said radiant barrier being adapted to reflect heat inwardly into said cavity, said radiant barrier comprising an inner layer of metal foil overlying said inner covering, adjacent surfaces of said inner covering and said inner layer of metal foil being not bonded to each other, a polymeric sheet bonded to said inner layer of metal foil, an outer layer of metal foil bonded to said polymeric sheet and said outer covering overlying said outer layer of metal foil, adjacent surfaces of said outer covering and said outer layer of metal foil being not bonded to each other.