To Activate the Hand Warmer:
Hold the metal disc inside the hand warmer between your thumb and forefinger and bend it gently until it clicks. The solution will crystallize and release its heat. Massaging the pack will help maximise the heat given from the hand warmer. The hand warmer will stay warm for about 30-35 minutes.
When the hand warmer is cold and hard, place in a large pan of boiling water and simmer for approx 10-15 minutes or until all the crystals disappear. Keep the PVC material away from the sides of the pan during the re-heating process. Allow water to cool down before removing. Be careful when removing from water as it may be hot. Once it has cooled it`s ready for you to use again.