Heating Patches for Soothing Period Cramps
5 Wearable Heating Patches for On-the-Go Period Cramp Relief
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The budget-friendly ThermaCare AdvancedMenstrual Pain Therapy Heatwraps ($7 for three patches) stay warm for up to eight hours, but you should know they can take up to at least 30 minutes to reach their optimal cramp-soothing temperature.