The ElastoGel all purpose pack is used to offer hot or cold therapy to any area where a flat, sheet form will suffice. The tough, flexible gel will not leak if punctured and the 4-way stretch material will help assure product durability and effective therapy management. Heat the pack in the microwave or cool in the freezer. The Elasto-Gel all purpose pack is used to help soothe muscle and joint pain. Elasto-Gel therapy products are made utilizing a tough, flexible high glycerine gel that is covered with a four-way stretch material that allows maximum conformity, hot and cold transfer and comfort.