Patent ID: 7217456

Claim:
A composite textile fabric comprising an inner fabric layer made of a yarn comprising a plurality of fibers of polyester or other synthetic yarn which have been rendered hydrophilic, and an outer fabric layer made of a yarn comprising a plurality of fibers of polyester or other synthetic yarn which have also been rendered hydrophilic; wherein the inner fabric layer and outer fabric layer are formed concurrently by knitting a plaited construction; wherein particles of a refractory compound are embedded only within said plurality of yarn fibers of said inner fabric layer; and wherein said inner fabric layer has a surface area enlarged by a raising process for creating air spaces to enhance insulation performance and for reducing contact of the inner fabric layer upon a wearer's skin, and substantial portion of the particles of the refractory compound are spaced from the surface of the skin, due to the raising process, to cause body heat reflected by the particles to travel through the trapped air space of the raised surface region for insulated warming of the wearer's skin.