Features:
1)This product is made of sodium acetate, which has no side effect to human.
2) It can be reused for thousands of times, don't need to use the battery, so spent no costs to reuse, just need to boil it with cloth in the hot water for 5 minutes.
3)it can keep warm for about 30 minutes. It can keep the hands and body warm and can also as a promotional gifts.
4)Different colors and shapes are available.

Usage:
1. To activate: You just need to place the inside magic metal disc between forefinger and thumb, press against it and then it will become hot immediately!
2. To recharge: Put the hot pack in boiling water with cloth for about 5 mins. But you should prevent the plastic bag from contacting the bottom of the pot.

Notices:
1. This product is for eternal use only. If the inner fluid contact with eyes, please rinse thoroughly with water.
2. In order to prevent the temperature from too high, it is better to wrap it with towel or sleeve when you use it. If you have any uncomfortable sense during using it, stop using it for several mins and then reuse it.
3. Please refer to the doctor if you have some problem in circulation systems.