Removable insulated head gear lining

This invention describes a special removable lining for hats or caps, designed to keep your head comfortable in various temperatures. It uses two distinct fabric layers: an inner layer that touches your head, made from a thin, reflective synthetic material to wick away sweat and allow air circulation, and an outer layer that sits between the inner layer and your hat, made from a multi-membrane fabric that insulates, breathes, and blocks wind and water. The claims specifically describe an assembly where the headgear and liner are combined, with the two liner shells joined at their edges, and the inner shell made from a blend of olefin and polyester fibers.