It is available for cold or hot pack.necessary as a good assistant forr every family.Cold compress : Use after put in the icebox or freezing box (minus 10 to 20 centi-degrees)of refrigerator for more than 15 minutes . Hotcompress :Soak the bag in a container full of water and put into a microwaveoven to heat(hightemperature)for 3 minutes. Or put the bag directly into the boiling waterfor 5 minutes to fully heat it
Can Cooler