Product Description The Pearl Technology contained in every TheraPearl pack enhances the age-old therapy of heating and cooling to alleviate pain. Recover from injuries faster or reduce everyday aches and pains using TheraPearl reusable hot and cold compress packs. Both heat and ice can be administered through the TheraPearl pack for the doctor recommended time of 20 minutes.Freeze TheraPearl pack to reduce swelling and bruisingMicrowave TheraPearl pack for penetrating pain reliefRegardless of temperature, TheraPearl packs stay smooth and soft on your skin as they conform to deliver soothing relief