Polar Gel Packs are designed for maintaining foods, medications and other perishables at refrigerated or chilled temperatures during temporary storage or transport in insulated containers. Prepare Gel Packs by putting them in a residential freezer prior to use. Gel Packs can be reused, and once no longer needed, can be discarded in normal waste disposal. Gel Packs are safe and non-toxic, and may be stored either frozen or at room temperature. To clean, simply wipe with soap and warm water.