1. It is used for promotion items or used to make hand or body warm in the winter.

2. It works especially effective on muscle aching, arthritis pain and etc.

3. Bend the metal disc, the liquid will become crystal and heat automatically. For next using, only need to put it in a boiler full of water with a cloth and heat until the crystal becomes into liquid (about five minutes).

4. Reusable, Non-toxic, Non-caustic.

5. We can make various shapes and OEM order is welcome.