Provides consistent hot or cold therapy for convenient and effective pain relief. One sided insulation. Perfect for recurring therapy needs. Manufacturer #: 80104 Brand: Jack Frost Manufacturer: Cardinal Activation Method: Microwave / Freezer Application: Hot / Cold Therapy Pack Dimensions: 6 X 9 Inch Material: Plastic / Gel Filled Securing Method: Without Securing Method Size: Medium Target Area: General Purpose Usage: Reusable