How to Activate:
Locate the metal disc inside each gel pack and bend between your fingers and thumb until you feel a click. The gel will crystallize and heat up. Place the warm gel packs inside the ear muff covers, making sure they are secure and completely covered. Do not allow the gel packs to be used directly against the sensitive skin of the ears. The gel packs will stay warm for 30-35 minutes.
To Reactivate the Reusable Gel Packs:
When the gel packs are cold and hard, place them 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 this process. Allow water to cool down before removing. Be careful when removing the gel packs from water as they may be hot. Once the gel packs have cooled they are ready for use again.