... associated with migraine, headache, fever, muscle aches, sprains, over-exertion, hot-flashes or whenever you need relief. 2. Provides immediate cooling ... each sheet lasts up to 8 hours. Since Be Koool gel sheets are non-medicated, they are safe to use with ... /bag,ctn size: 53x38x13cm, N. W. /G. W.: 5/6kgs hot & cold massage---the heat pain relief gel patch