Medline Accu-Therm Reusable Hot and Cold Gel Packs are made with non-toxic gel. These packs can be microwaved or boiled for hot therapy, or frozen for two hours for cold therapy. These packs remain pliable and soft after freezing. They can be cleaned easily with soap and water.Other products from H e a l t h P r o d u c t s F o r Y o u