... cooling relief from the discomfort associated with migraine, headache, fever, muscle aches, sprains, over-exertion, hot-flashes or whenever you need ... 8 hours. Since Be Koool gel sheets are non-medicated, they are safe to use with medicationPacking: 1pc/bag,ctn size ... : 53x38x13cm, N. W. /G. W.: 5/6kgs hot & cold massage---the heat pain relief gel patch