Animal hand warmer To reactivate place heat gel pack in large pan of boiling water and simmer for approximately 10-15 minutes or until cyrstals disappear. Allow to cool before removing gel pack and click. 3 designs to choose from are: Pink Unicorn Green Crocodile Blue Llama Design will be picked at RANDOM if not specified at the time of placing your order. Send us a message when you order to let us know what design you want to save disappointment! Not suitable for children under 36 months