OEM Customization Options：
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Fan type & airflow design
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Battery capacity & charging method
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Control switch (button / speed levels)
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Hat style & basic materials
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Logo branding (embroidery / print / label)
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Packaging customization
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From airflow system to logo branding — reliable OEM manufacturing for cooling hats.
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Heating material: safety infrared carbon fiber heating element Material: linen cloth Number of heating sheets: 30*30CM one piece Size: 35*35CM
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Heating material: safety infrared carbon fiber heating element Material: soft flannel Number of heating sheets: front and rear each Size: 35*25*10CM
