Linda Durbesson

LD Instant Reusable Heat Pack 10" Green

Regular price $40.00

The general purpose of heat treatment is to encourage muscle relaxation and to help relieve or reduce pain.

The #LDheatpack helps to relax tight, stiff or sore muscles allowing for free and easy body movements.

The heat pack can be used for neck and shoulder pain, back pain, arthritis, poor circulation, menstrual cramps or any place heat comfort is desired.

By applying therapeutic heat to an area of pain or stiffness an individual will experience increased blood flow through the tissue.

This increased blood flow helps to wash away the pain, while delivering oxygen and nutrients to the injured, sore muscle area.

How to Use


  1. Locate the activator button in your LD heat pack. Use your thumb to firmly click and release the very center of the button on the side with the most metal showing. The heat pack will instantly crystalize and heat up to 130°F right before your eyes.
  2. Insulate the pack to prolong heat under clothing or in a towel or strap and use it for the duration of its heat for all of your therapeutic needs, outdoor activities or just to stay warm. The heat pack will eventually cool and become solid.
  3. Wrap the pack in a dish cloth and carefully place it in a pot of boiling water. Continue to boil for 10 to 20 minutes depending on the size of the pack. Make sure that all crystals have completely melted in the pack. Use tongs to carefully remove the pack from the pot and allow it to cool to room temperature.

Your heat pack is now ready to activate all over again! WHENEVER AND WHEREVER YOU WANT!

To Use As a Cold Pack: Your LD heat pack will also work great as a cold pack. Just place it in the freezer for about an hour before use. It will stay soft and flexible and form fit to your body. Be sure to set your timer and remove it within an hour or it may activate and damage the pack.

How the magic happens…
The process the heat pack goes through is known as an exothermic reaction. The sodium acetate inside the heat pack freezes at 130º Fahrenheit but will stay in a liquid state at room temperature. 

This is known as being super-cooled. With a click of the activator button, you cause a few of the molecules to become solid thus triggering a chain reaction. In the process of going from a liquid to a solid, the by-product is heat. These heat packs are fun to watch. Bending the metal disk starts the crystallization process, and you can see the crystallization proceed through the liquid.

What is happening here seems like magic, but the process can be understood if you think about water freezing. Water freezes at 32º F (0º C). If you were to stick a thermometer in a cup of water and put the cup in the freezer, you would find that the temperature of the water falls to 32º F and then hangs there until all of the water is completely frozen. Then the temperature of the solid water falls to the temperature of the freezer.

What if you could somehow super-cool the water?
That is, say that you could get the water’s temperature to 10o below the freezing point without it crystallizing into a solid — you can sometimes do this using a very clean glass and distilled water so there are no points for the water to begin crystallizing. In this condition, if you tap the glass the temperature of the water will jump up to 32º F (0º C), and the water will solidify quickly. HotShotz Heat Packs contain sodium acetate and water. Sodium acetate is very good at super-cooling. It freezes (solidifies) at 130º F (54º C), but will remain as a liquid at a much lower temperature and is very stable. Clicking the disk, however, forces a few molecules to flip to the solid state, and the rest of the liquid then rushes to solidify as well.
The temperature of the solidifying liquid jumps up to 130º F during this process. When you boil the solid, you melt it back to the liquid state. You have to completely melt every crystal, by the way, or the liquid will quickly re-solidify. You can repeat this cycle forever, theoretically, just as you can freeze and melt water as many times as you like.