Head cooling unit

Abstract

This product is a neck cooling device consisting of a horizontally elongated, flexible sheet with blocks containing a phase-change material (a material that can repeatedly release and absorb heat depending on the temperature environment) arranged on top of it. Clips are provided at the left and right ends of the upper edge of the sheet, and a fastening belt is provided in the center of the upper edge. This product is attached to the back of a hat or helmet using the clips and fastening belt, allowing the sheet to hang down and the blocks to come into contact with the user's neck. The phase-change material absorbs body heat and melts, thereby cooling the user's neck.

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