How do the Heat Units/Cooling Units work?
The Heat Units are filled with a wax-like material that absorbs heat when it melts at about 154oF. Theyre placed in boiling water for about twenty minutes or until the material melts. As they cool down, the material re-solidifies giving off heat. The cooling units are similar to Blue Ice , but they are more durable for the repeated use of a daily meal delivery program, and they are designed to fit in with the meal trays.
