Gel RECHARGEABLE HANDWARMER ideal for heating hands in cold weather. It has a durable package of flexible PVC, inside of which is a special liquid with metal lamina which has to be broken to bring about the crystallization process of the gel. The heat generated during the process is pleasant to the skin of the body and provides an adequate thermal comfort. When heated, the temperature of heater reaches 50 ° C and, depending on environment is maintained for tens of minutes (approx. 1h). P> In the case of re-use simply insert the heater into boiling water for about 6 minutes - in effect, crystallized mass will dissolve and the compress will return to the original state of aggregation.