Characteristic: Cooling Gel Sheets are precisely designed nonwoven pads infused with soothing water-based gel. They contain no medication, so there's none of the usual anxieties about drug interactions with medications. Ready to use and with no need for refrigeration, Cooling Gel Sheet provides immediate and long-lasting cooling relief to the sever discomfort associated with fever, migraine and headache, last up to 8 hours. They are really convenient and portable.