主权项 |
1. A personal temperature moderating device, for use as head apparel, comprising:
an outer layer which serves as the physical exterior of the head apparel, wherein the outer layer provides a hard or soft external surface of the head apparel; an inner layer which serves as the inside of the head apparel in direct contact with the top of the wearer's head, wherein the inner layer has a thermal conductivity; and a middle layer disposed between the outer layer and the inner layer, wherein the middle layer comprises a thermal retention liquid or gel capable of being cooled or warmed. |