Heat Retention and Insulation System for Wearable Articles

A boot comprising:

• an upper connected to a sole, the upper and an inner surface of the sole forming an inner body space of the boot, the sole including an outsole, a midsole, and an insole, an outer surface of the outsole being a ground contacting region of the boot, the outsole including a recess wherein the midsole is fitted, the midsole including a foam layer adhered to the outsole, an interface of the outsole and the foam layer forming an air tight seal, the midsole further including an insulation pack, the outsole and the foam layer having a recess wherein the insulation pack is flush with a lip of the recess, the insole disposed in the inner body space and attached to a lining of the upper, the insole, midsole, and outsole in a compressed state when worn by a wearer and in a non-compressed state when not worn by a wearer, the insulation pack comprising:
• a honeycomb perforated layer including a plurality of air pockets within a plurality of hexagonal perforations, the plurality of perforations in air communication with the inner body space, the honeycomb perforated layer having a first durometer;
• an insulating layer, the insulating layer adhered to and in face-sharing contact with the honeycomb perforated layer, the insulating layer having a network of fibers which are capable of holding air, the network of fibers in air communication with the plurality of hexagonal perforations, the insulating layer having a second durometer, the second durometer less than the first durometer, the insulating layer being more compressed than the honeycomb layer in the compressed state;
• and
• a reflective layer, the reflective layer adhered to and in face-sharing contact with the foam layer at a first face of the reflective layer, the reflective layer adhered to and in face-sharing contact with the insulating layer at a second face of the reflective layer.

A wearable article insulation and heat retention system, comprising:

• an insulation pack disposed on an internal side of an inner body space of the article relative to a substantially air-tight seal on an external side of the inner body space, the insulation pack comprising,
• a perforated air communication and retention layer in air communication with the inner body space, the perforated air communication and retention layer including a plurality of hexagonal perforations,
• a compressible layer in air communication and face-sharing contact with the perforated air communication and retention layer, the compressible layer more compressible than the perforated air communication and retention layer, the compressible layer comprising a network of fibers which are capable of holding air, the network of fibers in air communication with the plurality of hexagonal perforations, the network of fibers and the perforated air communication and retention layer forming a lofted air space, and
• a reflective layer in face-sharing contact with the compressible layer.