| 摘要 |
A cap device for providing warmth to the head of a person including an outer cap having a water impervious outer surface and sized to fit over the hair of a person, a liner located inside the outer cap, the liner being sized to contact the hair of a person, and a heat source including a crystalline compound capable of exothermic reaction with water. The preferred heat source is calcined calcium oxide and a powdered zeolite in a ratio of from about 14 to 20 for calcium oxide and from about 7 to 10 for powdered zeolite.
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