Perfect for dry eyes/allergies, headaches/sinuses, puffy eyes and more Easily freeze for two hours to feel cooling relief or microwave for 10-15 seconds for penetrating heat Reusable hot and cold compress with gel pearls that conveniently hold temperature for the doctor-recommended time of approximately 20 minutes For product longevity, store reusable pack in an airtight container or bag in the freezer Non-latex BPA-free phthalate-free, mask measures 9" x 2.75"