Any query, please visit: WWW.OT-MED.COM or contact us directly by Olivia.li@ot-med.com Function: Hot or cold therapy for personal care. Heat brings increased blood circulation to an affected area. This helps to relax tight muscles and restore flexibility in a wide variety of ailments such as: muscle pain & soreness, muscle spasms & cramps, arthritis, chronic neck or back stiffness, menstrual cramps,etc. Cold treatment actually expedites the natural recovery process by improving the healing affects to blood flow to an affected area. This helps to reduce the swelling and pain caused by inflammation and relieves the discomforts associated with: Joint&muscle injuries/back&neck pain,sunburn, other burns,etc. Non-toxic, non-caustic, reusable Instructions: For warm compress, put gel pack flat in microwave oven to heat, the heating time should follow the instruction strictly. For cold compress, place it in freezer for at least two hours before using. Application: 1.Suitable for personal healthcare, use in spa, household, hospital and so on 2.Ideal product for both cold and hot therapy in treating stiffness, spondylosis and similar symptoms,reducing swelling and pain.