The Emergency Heat Hand Warmers are an innovative, new product that bring instant heat when you need it most. Simply snap the metal disk found in each of the Emergency Heat Hand Warmers two to four times to start a chemical reaction that will crystallise the liquid and in turn create an exothermic reaction. The result is that the packs will give off heat up to 55°C in ultra-quick time.
The set contains two Emergency Heat Hand Warmer packs, ideal for those frosty mornings when you have to de-ice the car or take the dog out for a walk. The heat will last around 30 minutes or several hours if kept in an insulated place.
The best thing about the Emergency Heat Hand Warmers is that they can be re-used by simply placing them in boiling water for five to ten minutes. This results in the crystals returning to a liquid state which means they can be used again after they have cooled down.