free electricity health care instand heat pack han

instant heat pack free electric health care and warm your hand and body custom made appearance design, size and color OEM accepted How to use: 1. break off the metal part which inside the heat pack several times, then there is some white solid will come out and the heat pack becomes heater and heater, it will be better if you knead it some more times. (heat temperature 48-50C). 2. wheninstand heat pack becomes cold, please put int the boiling water for 10 minutes; then it will change into liquid condition, and becomes soft. after it becomes cold, it can be used again. 3. when you use the heat pack again, please follow the above instruction. 4. the hand warmer can be reused. When to use: 1. snowing, hunting, climbing in cold weather, out door use 2. studing / working / travelling in the winter 3. keep health, keep warm Caution 1. this product is non-toxic and non-poison, but eating is forbidden. 2. if it is leaking or damaged, please stop use use and throw it away. 3. if the liquid comes to the skin, please wash it with a lot of water. 4. children must be under the supervision of the adult.